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Viscount Horatio Nelson (1758-1805), before the Battle of Trafalgar, 21 October 1805, c.1854 (oil on canvas)

Viscount Horatio Nelson (1758-1805), before the Battle of Trafalgar, 21 October 1805, c.1854 (oil on canvas)

Lucy, Charles (1814-73) (after)

MMM7339092

Supernova 1987A in the Great Magellan Cloud View by HST - Glittering stars and wisps of gas create a breathtaking backdrop for the self - destruction of a massive star, called supernova 1987A, in the Large Magellanic Cloud, a nearby galaxy. Astronomers in the Southern hemisphere witnessed the brilliant explosion of this star on Feb. 23, 1987. Shown in this NASA Hubble Space Telescope image, the supernova remnant, surrounded by inner and outer rings of material, is set in a forest of ethereal, diffuse clouds of gas. This three - color image is composed of several pictures of the supernova and its neighboring region taken with the Wide Field and Planetary Camera 2 in Sept. 1994, Feb. 1996 and July 1997. The many bright blue stars nearby the supernova are massive stars, each more than six times heftier than our Sun. With ages of about 12 million years old, they are members of the same generation of stars as the star that went supernova. The presence of bright gas clouds is another sign of

Supernova 1987A in the Great Magellan Cloud View by HST - Glittering stars and wisps of gas create a breathtaking backdrop for the self - destruction of a massive star, called supernova 1987A, in the Large Magellanic Cloud, a nearby galaxy. Astronomers in the Southern hemisphere witnessed the brilliant explosion of this star on Feb. 23, 1987. Shown in this NASA Hubble Space Telescope image, the supernova remnant, surrounded by inner and outer rings of material, is set in a forest of ethereal, diffuse clouds of gas. This three - color image is composed of several pictures of the supernova and its neighboring region taken with the Wide Field and Planetary Camera 2 in Sept. 1994, Feb. 1996 and July 1997. The many bright blue stars nearby the supernova are massive stars, each more than six times heftier than our Sun. With ages of about 12 million years old, they are members of the same generation of stars as the star that went supernova. The presence of bright gas clouds is another sign of

PIX4582360

Nebula N70 in the Great Magellan Cloud - The N 70 nebula in Large Magellanic Cloud (LMC) - The Henize 70 nebula extends for about 400 years - light, it is located in the Great Magellan Cloud. In the center, a small group of very massive and extremely hot stars, stars of Wolf - Rayet. Image obtained by Siding Spring's 3.9m telescope. At the centre of this remarkable bubble - like nebula nebula is a small group of extremely hot stars. Some of these stars are rapdly losing mass and have stellar winds blowing from their surfaces with velocities that approach 4000 kilometers per second. Such stars are known as Wolf - Rayet stars and are found in galaxies capable of forming massive stars. There are many such stars in the Large Magellanic Cloud (LMC) but not all of them are associated with distinctive nebulae. The outward flowing streams of energetic particles from Wolf - Rayet (and other energetic stars) eventually interact with the relatively stationary interstellar medium pervading the LMC

Nebula N70 in the Great Magellan Cloud - The N 70 nebula in Large Magellanic Cloud (LMC) - The Henize 70 nebula extends for about 400 years - light, it is located in the Great Magellan Cloud. In the center, a small group of very massive and extremely hot stars, stars of Wolf - Rayet. Image obtained by Siding Spring's 3.9m telescope. At the centre of this remarkable bubble - like nebula nebula is a small group of extremely hot stars. Some of these stars are rapdly losing mass and have stellar winds blowing from their surfaces with velocities that approach 4000 kilometers per second. Such stars are known as Wolf - Rayet stars and are found in galaxies capable of forming massive stars. There are many such stars in the Large Magellanic Cloud (LMC) but not all of them are associated with distinctive nebulae. The outward flowing streams of energetic particles from Wolf - Rayet (and other energetic stars) eventually interact with the relatively stationary interstellar medium pervading the LMC

PIX4620872

Antares star and globular clusters in the Scorpion - The nebula around Antares and globular clusters - Supergeante star Antares seen at the 3.9m telescope from Siding Spring. At the top right is the globular cluster NGC 6144, at the extreme right, cluster M4. Antares is a giant among stars, and like giants in general, very rare. Antares has spent most of its short life as a highly luminous blue supergiant star, its mass obliging it to consume its vast store of nuclear fuel (hydrogen) very rapidly. This nuclear fusion process supplied the energy that prevented the star collapsing in on itself - - all stars support themselves against gravity in this way. Now, the supply of fuel in the core of the star is close to exhaustion and the star has undergone a major internal re - arrangement to cope with the changed circumstances, both cooling and swelling in the process. This star is big; the earth would be inside it if it were to replace the sun. At its cool, distended surface, tiny solid part

Antares star and globular clusters in the Scorpion - The nebula around Antares and globular clusters - Supergeante star Antares seen at the 3.9m telescope from Siding Spring. At the top right is the globular cluster NGC 6144, at the extreme right, cluster M4. Antares is a giant among stars, and like giants in general, very rare. Antares has spent most of its short life as a highly luminous blue supergiant star, its mass obliging it to consume its vast store of nuclear fuel (hydrogen) very rapidly. This nuclear fusion process supplied the energy that prevented the star collapsing in on itself - - all stars support themselves against gravity in this way. Now, the supply of fuel in the core of the star is close to exhaustion and the star has undergone a major internal re - arrangement to cope with the changed circumstances, both cooling and swelling in the process. This star is big; the earth would be inside it if it were to replace the sun. At its cool, distended surface, tiny solid part

PIX4571773

Nebula N70 in the Great Magellan Cloud - The N 70 nebula in Large Magellanic Cloud (LMC) - The Henize 70 nebula extends for about 400 years - light, it is located in the Great Magellan Cloud. In the center, a small group of very massive and extremely hot stars, stars of Wolf - Rayet. Image obtained by Siding Spring's 3.9m telescope. At the centre of this remarkable bubble - like nebula nebula is a small group of extremely hot stars. Some of these stars are rapdly losing mass and have stellar winds blowing from their surfaces with velocities that approach 4000 kilometers per second. Such stars are known as Wolf - Rayet stars and are found in galaxies capable of forming massive stars. There are many such stars in the Large Magellanic Cloud (LMC) but not all of them are associated with distinctive nebulae. The outward flowing streams of energetic particles from Wolf - Rayet (and other energetic stars) eventually interact with the relatively stationary interstellar medium pervading the LMC

Nebula N70 in the Great Magellan Cloud - The N 70 nebula in Large Magellanic Cloud (LMC) - The Henize 70 nebula extends for about 400 years - light, it is located in the Great Magellan Cloud. In the center, a small group of very massive and extremely hot stars, stars of Wolf - Rayet. Image obtained by Siding Spring's 3.9m telescope. At the centre of this remarkable bubble - like nebula nebula is a small group of extremely hot stars. Some of these stars are rapdly losing mass and have stellar winds blowing from their surfaces with velocities that approach 4000 kilometers per second. Such stars are known as Wolf - Rayet stars and are found in galaxies capable of forming massive stars. There are many such stars in the Large Magellanic Cloud (LMC) but not all of them are associated with distinctive nebulae. The outward flowing streams of energetic particles from Wolf - Rayet (and other energetic stars) eventually interact with the relatively stationary interstellar medium pervading the LMC

PIX4620865

Circumpolar - South Hemisphere - Star trails around the south celestial pole - Photographic pose of several hours around the south celeste pole. Siding Spring's 3.9m telescope dome in the foreground. The reddish color of the sky is due to the volcanic eruption of the Pinatubo. On June 15, 1991, after weeks of rumbling and venting steam and poisonous gas, Mt Pinatubo exploded on the island of Luzon, in the Phillipines. This was the largest volcanic eruption for nearly a century. The eruption killed over 700 people and ejected several cubic kilometers of dust and gas over 35 km high into the stratosphere. The effects were felt around the world and included a temporary global cooling and a thinning of the ozone layer as well as other changes in the global weather pattern. However, the most obvious effect for many people was a milkiness in the daytime sky due to scattering by high altitude aerosols, and corresponding anomalous sunsets and twilights that were noticable for years. This pictu

Circumpolar - South Hemisphere - Star trails around the south celestial pole - Photographic pose of several hours around the south celeste pole. Siding Spring's 3.9m telescope dome in the foreground. The reddish color of the sky is due to the volcanic eruption of the Pinatubo. On June 15, 1991, after weeks of rumbling and venting steam and poisonous gas, Mt Pinatubo exploded on the island of Luzon, in the Phillipines. This was the largest volcanic eruption for nearly a century. The eruption killed over 700 people and ejected several cubic kilometers of dust and gas over 35 km high into the stratosphere. The effects were felt around the world and included a temporary global cooling and a thinning of the ozone layer as well as other changes in the global weather pattern. However, the most obvious effect for many people was a milkiness in the daytime sky due to scattering by high altitude aerosols, and corresponding anomalous sunsets and twilights that were noticable for years. This pictu

PIX4581098

Spiral galaxy NGC 300 in the Sculptor - Galaxy NGC 300 in Sculptor - Located about 7 million years ago - light from Earth, the spiral galaxy NGC 300 belongs to the Sculptor's group. It appears to us as a great object in the sky since its apparent diameter is almost that of the full moon. This photo was obtained by the MPG/ESO telesope of 2.2 - m in La Silla in Chile in 2000. Located some 7 million light - years away, the spiral galaxy NGC 300 is a beautiful representative of its class, a Milky - Way - like member of the prominent Sculptor group of galaxies in the southern constellation of that name. NGC 300 is a big object in the sky - being so close, it extends over an angle of almost 25 arcmin, only slightly less than the size of the full moon. It is also relative bright, even a small pair of binoculars will unveil this magnificent spiral galaxy as a hazy glowing patch on a dark sky background. The comparatively small distance of NGC 300 and its face - on orientation provide astronom

Spiral galaxy NGC 300 in the Sculptor - Galaxy NGC 300 in Sculptor - Located about 7 million years ago - light from Earth, the spiral galaxy NGC 300 belongs to the Sculptor's group. It appears to us as a great object in the sky since its apparent diameter is almost that of the full moon. This photo was obtained by the MPG/ESO telesope of 2.2 - m in La Silla in Chile in 2000. Located some 7 million light - years away, the spiral galaxy NGC 300 is a beautiful representative of its class, a Milky - Way - like member of the prominent Sculptor group of galaxies in the southern constellation of that name. NGC 300 is a big object in the sky - being so close, it extends over an angle of almost 25 arcmin, only slightly less than the size of the full moon. It is also relative bright, even a small pair of binoculars will unveil this magnificent spiral galaxy as a hazy glowing patch on a dark sky background. The comparatively small distance of NGC 300 and its face - on orientation provide astronom

PIX4609158

Galaxy NGC 891 in Andromede - Edge - on spiral galaxy NGC 891 in Andromeda - Spiral galaxy seen by the slice located at a distance of 10 million years - light.. This image obtained with the 2.5m Isaac Newton telescope of La Palma. If we could view the Milky Way from a distance of about 30 million light years it would look something like NGC 891. But galaxies that look like this are quite rare because the chance alignment of the thin disk of a spiral galaxy with our line of sight is unusual. A few degrees either side of its orientation and NGC 891 would be just another highly inclined spiral galaxy. From this unusual vantage point we can see in NGC 891 the surprising narrowness of the obscuring dust lane, a dark, slightly irregular band across the galaxy. We also see that it is yellowish, confirming that it is dust, which absorbs blue light, as in the Milky Way. Also similar to the Milky Way is the prominent central 'bulge' corresponding to the rich star clouds in Sagittarius. However,

Galaxy NGC 891 in Andromede - Edge - on spiral galaxy NGC 891 in Andromeda - Spiral galaxy seen by the slice located at a distance of 10 million years - light.. This image obtained with the 2.5m Isaac Newton telescope of La Palma. If we could view the Milky Way from a distance of about 30 million light years it would look something like NGC 891. But galaxies that look like this are quite rare because the chance alignment of the thin disk of a spiral galaxy with our line of sight is unusual. A few degrees either side of its orientation and NGC 891 would be just another highly inclined spiral galaxy. From this unusual vantage point we can see in NGC 891 the surprising narrowness of the obscuring dust lane, a dark, slightly irregular band across the galaxy. We also see that it is yellowish, confirming that it is dust, which absorbs blue light, as in the Milky Way. Also similar to the Milky Way is the prominent central 'bulge' corresponding to the rich star clouds in Sagittarius. However,

PIX4609481

Perseus Molecular Cloud, 2015 (digital photo)

Perseus Molecular Cloud, 2015 (digital photo)

Pech, Pavel (21st century)

MMM7341508

Southern Crown Nebula - The Corona Australis nebula (NGC 6726 - 27 - 29) - R Coronae Australis is a region of star formations visible in the southern hemisphere. It is located about 500 light years away from Earth. Image made with Siding Spring's 3.9m telescope. This spectacular reflection nebula is the result of a few bright stars caught up in a large, dusty cloud. If that is all there was here, this region would be considered to be like the Pleiades, an accidental association of dust and stars. However, there are features here that show the dark cloud to be an active star forming nebula, though most of the action is hidden from view. The peculiar yellowish curved streak near the two bright reflection nebulae surround an intriguing object best seen in infrared light, R CRA, a young star still accreting interstellar material on to its surface. It seems to be the source of two compact but distinctly red patches which are Herbig - Haro objects, often the first visible signs of star forma

Southern Crown Nebula - The Corona Australis nebula (NGC 6726 - 27 - 29) - R Coronae Australis is a region of star formations visible in the southern hemisphere. It is located about 500 light years away from Earth. Image made with Siding Spring's 3.9m telescope. This spectacular reflection nebula is the result of a few bright stars caught up in a large, dusty cloud. If that is all there was here, this region would be considered to be like the Pleiades, an accidental association of dust and stars. However, there are features here that show the dark cloud to be an active star forming nebula, though most of the action is hidden from view. The peculiar yellowish curved streak near the two bright reflection nebulae surround an intriguing object best seen in infrared light, R CRA, a young star still accreting interstellar material on to its surface. It seems to be the source of two compact but distinctly red patches which are Herbig - Haro objects, often the first visible signs of star forma

PIX4620228

Space Exploration: Soyuz and Orion Ships - Artist's View - CEV-Soyuz Joint Mission - An American Orion ship mooring has a Soyuz TMA-M spaceship during a distant space exploration mission. Here, the ship is approaching a satellite stationed at a point in Lagrange. Illustration. An Orion class Crew Exploration Vehicle (AKA Deep Space Vehicle) is paired with a Soyuz TMA-M manned spacecraft for a joint deep space rendezvous with a satellite parked in a gravitationally stable Lagrangian point about 1 million miles beyond the orbit of the Earth's Moon. At this position, in this case a Lagrangian point 2, or L2, the Earth is between the spacecraft and the Sun resulting in the Earth eclipsing much of the Sun's light, however at this distance the Earth does not subtend an angle large enough to cover the entire disk of the Sun. What's visible of the Sun is a brilliant ring of light illuminating the spacecraft. (The streamers of light around the Sun are not the Sun's corona, but rather a way of i

Space Exploration: Soyuz and Orion Ships - Artist's View - CEV-Soyuz Joint Mission - An American Orion ship mooring has a Soyuz TMA-M spaceship during a distant space exploration mission. Here, the ship is approaching a satellite stationed at a point in Lagrange. Illustration. An Orion class Crew Exploration Vehicle (AKA Deep Space Vehicle) is paired with a Soyuz TMA-M manned spacecraft for a joint deep space rendezvous with a satellite parked in a gravitationally stable Lagrangian point about 1 million miles beyond the orbit of the Earth's Moon. At this position, in this case a Lagrangian point 2, or L2, the Earth is between the spacecraft and the Sun resulting in the Earth eclipsing much of the Sun's light, however at this distance the Earth does not subtend an angle large enough to cover the entire disk of the Sun. What's visible of the Sun is a brilliant ring of light illuminating the spacecraft. (The streamers of light around the Sun are not the Sun's corona, but rather a way of i

Walter B Myers

PIX4639150

Spiral galaxy M81 in the Great Bear - Spiral galaxy M81 in Ursa Major - The spiral galaxy M81 is located 12 million years ago - light from Earth. Its arms are home to star-forming regions while its core is surrounded by much older yellow stars. In the background at the top, an irregular dwarf galaxy, Holmberg IX. Image obtained by an amateur telescope of 50 cm, composting different poses. M81 is the brightest member of the nearby galactic group called the M81 group. This group contains at least 25 other members including the peculiar starburst galaxy M82, the peculiar galaxy NGC 3077 and many dwarfs galaxies. The core galaxies of the group (M81, M82, NGC 3077, NGC 2976) are strongly interacting and are all imbedded within a large and extended molecular gas cloud. The Dwarf irregular Holmberg IX (seen above M81 in the image) most likely condensed from tidal debri existing between M81 and M82. M81 has the distinction of being the nearest spiral galaxy to have an active galactic nucleus (

Spiral galaxy M81 in the Great Bear - Spiral galaxy M81 in Ursa Major - The spiral galaxy M81 is located 12 million years ago - light from Earth. Its arms are home to star-forming regions while its core is surrounded by much older yellow stars. In the background at the top, an irregular dwarf galaxy, Holmberg IX. Image obtained by an amateur telescope of 50 cm, composting different poses. M81 is the brightest member of the nearby galactic group called the M81 group. This group contains at least 25 other members including the peculiar starburst galaxy M82, the peculiar galaxy NGC 3077 and many dwarfs galaxies. The core galaxies of the group (M81, M82, NGC 3077, NGC 2976) are strongly interacting and are all imbedded within a large and extended molecular gas cloud. The Dwarf irregular Holmberg IX (seen above M81 in the image) most likely condensed from tidal debri existing between M81 and M82. M81 has the distinction of being the nearest spiral galaxy to have an active galactic nucleus (

R. Jay GaBany

PIX4610325

Star Formation in the Southern Cross - Star Formation in the Southern Cross - Part of the lactee route in the constellation of the Southern Cross seen in infrared by the Herschel space telescope. The hottest dust appears in blue, the coldest ones appear in red, the new stars will be born. Composite images obtained by SPIRE and PACS instruments on September 3, 2009. Some of the coldest and darkest dust in space shines brightly in this infrared image from the Herschel Observatory, a European Space Agency mission with important participation from NASA. The image is a composite of light captured simultaneously by two of Herschel's three instruments - - the photodetector array camera and spectrometer, and its spectral and photometric imaging receiver. The image reveals a cold and turbulent region where material is just beginning to condense into new stars. It is located in the plane of our Milky Way galaxy, 60 degrees from the center. Blue shows warmer material, red the coolest. The red fil

Star Formation in the Southern Cross - Star Formation in the Southern Cross - Part of the lactee route in the constellation of the Southern Cross seen in infrared by the Herschel space telescope. The hottest dust appears in blue, the coldest ones appear in red, the new stars will be born. Composite images obtained by SPIRE and PACS instruments on September 3, 2009. Some of the coldest and darkest dust in space shines brightly in this infrared image from the Herschel Observatory, a European Space Agency mission with important participation from NASA. The image is a composite of light captured simultaneously by two of Herschel's three instruments - - the photodetector array camera and spectrometer, and its spectral and photometric imaging receiver. The image reveals a cold and turbulent region where material is just beginning to condense into new stars. It is located in the plane of our Milky Way galaxy, 60 degrees from the center. Blue shows warmer material, red the coolest. The red fil

PIX4621141

Spiral galaxy M77 in the Whale - Active galaxy M77 (NGC 1068) in Cetus - M77 (NGC 1068). This active galaxy is the typical example of a Seyfert II galaxy. It has an active core and houses a massive black hole. She is the object of intense star formation in her spiral arms. NGC 1068 is around 50 million years of light from Earth. Image obtained by Siding Spring's 3.9m telescope. M77 is a Seyfert galaxy, a class of galaxy named for Karl Seyfert who first identified galaxies with emission lines superimposed on the normal radiation from their nuclei in 1943. Such galaxies are a subset of an ill - defined species generally known as 'active galaxies' whose nuclei emit radio - and X - radiation as well as visible light. The least active of the active galaxies are the Seyferts, the most active are the quasars which are mostly so distant that they can only be distinguished from stars by their spectrum. <BR>The common feature of these galaxy types is a small, very bright nucleus thought to host

Spiral galaxy M77 in the Whale - Active galaxy M77 (NGC 1068) in Cetus - M77 (NGC 1068). This active galaxy is the typical example of a Seyfert II galaxy. It has an active core and houses a massive black hole. She is the object of intense star formation in her spiral arms. NGC 1068 is around 50 million years of light from Earth. Image obtained by Siding Spring's 3.9m telescope. M77 is a Seyfert galaxy, a class of galaxy named for Karl Seyfert who first identified galaxies with emission lines superimposed on the normal radiation from their nuclei in 1943. Such galaxies are a subset of an ill - defined species generally known as 'active galaxies' whose nuclei emit radio - and X - radiation as well as visible light. The least active of the active galaxies are the Seyferts, the most active are the quasars which are mostly so distant that they can only be distinguished from stars by their spectrum. <BR>The common feature of these galaxy types is a small, very bright nucleus thought to host

PIX4609570

Injured soldiers are helped and carried on stretchers. Warfare in the jungle. New Guinea, 1943

Injured soldiers are helped and carried on stretchers. Warfare in the jungle. New Guinea, 1943

AUS1786024

Spiral Galaxy M33 in the Triangle - Spiral galaxy M33 in Triangulum - The Galaxy of the Triangle (M33, NGC598) is located about 2 million years ago - light from Earth. It belongs to the local group, just like our galaxy or Andromede galaxy. In red, the star-forming regions appear, especially at the top left NGC 604 one of the largest and most active star-forming regions. It extends over 150 years of light. Image obtained from the Isaac Newton telescope of La Palma. M33 is a large, almost face - on spiral galaxy about 2.5 million light years distant in the northern constellation of Triangulum. It is a member of the 'Local Group' of galaxies, which is dominated by the Milky Way and M31. Like M31, M33 is approaching the Milky Way at a velocity of about 180km/s. Although the total light M33 galaxy is that of a star of magnitude 5.3, its large diameter makes it hard to see. However, despite its low surface brightness, this galaxy was among the first to be identified as a 'spiral nebula' by

Spiral Galaxy M33 in the Triangle - Spiral galaxy M33 in Triangulum - The Galaxy of the Triangle (M33, NGC598) is located about 2 million years ago - light from Earth. It belongs to the local group, just like our galaxy or Andromede galaxy. In red, the star-forming regions appear, especially at the top left NGC 604 one of the largest and most active star-forming regions. It extends over 150 years of light. Image obtained from the Isaac Newton telescope of La Palma. M33 is a large, almost face - on spiral galaxy about 2.5 million light years distant in the northern constellation of Triangulum. It is a member of the 'Local Group' of galaxies, which is dominated by the Milky Way and M31. Like M31, M33 is approaching the Milky Way at a velocity of about 180km/s. Although the total light M33 galaxy is that of a star of magnitude 5.3, its large diameter makes it hard to see. However, despite its low surface brightness, this galaxy was among the first to be identified as a 'spiral nebula' by

PIX4609292

Around the Tarantula Nebula - Around the Tarantula nebula in the Large Magellanic Cloud - The Tarantula Nebula (or 30 Bream) is the largest star-forming region of the Great Magellan Cloud. It is located 170,000 light years ago in the constellation Dorado (southern hemisphere). At the center of this nebula, the open cluster of R136 stars, clusters of hot and massive stars. Image obtained with the 1.2m Schmidt UK Telescope from Siding Spring. In this picture we see the eastern end of the Large Magellanic Cloud where lies one of the most active star formation regions known. If this enormous complex of stars, gas and dust were at the distance of the better - known Orion Nebula the brightest parts of it would visible during the day and would cover a quarter of the sky at night. While the Orion Nebula contains a mere handful of the hot blue stars which energise it, the Tarantula nebula has spawned many thousands in the bright central region, which surrounds a compact, brilliant cluster known

Around the Tarantula Nebula - Around the Tarantula nebula in the Large Magellanic Cloud - The Tarantula Nebula (or 30 Bream) is the largest star-forming region of the Great Magellan Cloud. It is located 170,000 light years ago in the constellation Dorado (southern hemisphere). At the center of this nebula, the open cluster of R136 stars, clusters of hot and massive stars. Image obtained with the 1.2m Schmidt UK Telescope from Siding Spring. In this picture we see the eastern end of the Large Magellanic Cloud where lies one of the most active star formation regions known. If this enormous complex of stars, gas and dust were at the distance of the better - known Orion Nebula the brightest parts of it would visible during the day and would cover a quarter of the sky at night. While the Orion Nebula contains a mere handful of the hot blue stars which energise it, the Tarantula nebula has spawned many thousands in the bright central region, which surrounds a compact, brilliant cluster known

PIX4618257

Spiral galaxy M81 in the Great Bear - Spiral galaxy M81 in Ursa Major - The spiral galaxy M81 is located 12 million years ago - light from Earth. Its arms are home to star-forming regions while its core is surrounded by much older yellow stars. An irregular dwarf galaxy, PGC 28757 (Holmberg IX), is visible at the top of the picture. Image obtained with a 50 cm telescope through different filters, total of different poses: 20h. M81 is the brightest member of the nearby galactic group called the M81 group. This group contains at least 25 other members including the peculiar starburst galaxy M82, the peculiar galaxy NGC 3077 and many dwarfs galaxies. The core galaxies of the group (M81, M82, NGC 3077, NGC 2976) are strongly interacting and are all imbedded within a large and extended molecular gas cloud. The Dwarf irregular Holmberg IX (seen above M81 in the image) most likely condensed from tidal debri existing between M81 and M82. M81 has the distinction of being the nearest spiral gala

Spiral galaxy M81 in the Great Bear - Spiral galaxy M81 in Ursa Major - The spiral galaxy M81 is located 12 million years ago - light from Earth. Its arms are home to star-forming regions while its core is surrounded by much older yellow stars. An irregular dwarf galaxy, PGC 28757 (Holmberg IX), is visible at the top of the picture. Image obtained with a 50 cm telescope through different filters, total of different poses: 20h. M81 is the brightest member of the nearby galactic group called the M81 group. This group contains at least 25 other members including the peculiar starburst galaxy M82, the peculiar galaxy NGC 3077 and many dwarfs galaxies. The core galaxies of the group (M81, M82, NGC 3077, NGC 2976) are strongly interacting and are all imbedded within a large and extended molecular gas cloud. The Dwarf irregular Holmberg IX (seen above M81 in the image) most likely condensed from tidal debri existing between M81 and M82. M81 has the distinction of being the nearest spiral gala

R. Gendler

PIX4610335

Center of the Omega Nebula (M17) in the sagittarius seen by HST - Center of the Omega Nebula, a hotbed of newly born stars wrapped in colorful blankets of glowing gas and cradled in an enormous cold, dark hydrogen cloud. This picture was taken by the Advanced Camera for Surveys (ACS) aboard Nasa's Hubble Space Telescope. The region of the nebula shown in this photograph is about 3,500 times wider than our solar system. The area represents about 60 percent of the total view captured by ACS. The nebula, also called M17 and the Swan Nebula, resides 5,500 light - years away in the constellation Sagittarius. Like its famous cousin in Orion, the Swan Nebula is illuminated by ultraviolet radiation from young, massive stars, located just beyond the upper right corner of the image. Each star is about six times hotter and 30 times more massive than the Sun. The powerful radiation from these stars evaporates and erodes the dense cloud of cold gas within which the stars formed. The blistered walls

Center of the Omega Nebula (M17) in the sagittarius seen by HST - Center of the Omega Nebula, a hotbed of newly born stars wrapped in colorful blankets of glowing gas and cradled in an enormous cold, dark hydrogen cloud. This picture was taken by the Advanced Camera for Surveys (ACS) aboard Nasa's Hubble Space Telescope. The region of the nebula shown in this photograph is about 3,500 times wider than our solar system. The area represents about 60 percent of the total view captured by ACS. The nebula, also called M17 and the Swan Nebula, resides 5,500 light - years away in the constellation Sagittarius. Like its famous cousin in Orion, the Swan Nebula is illuminated by ultraviolet radiation from young, massive stars, located just beyond the upper right corner of the image. Each star is about six times hotter and 30 times more massive than the Sun. The powerful radiation from these stars evaporates and erodes the dense cloud of cold gas within which the stars formed. The blistered walls

PIX4620193

Shadrach, a chestnut hunter in a landscape, 1856 (oil on canvas)

Shadrach, a chestnut hunter in a landscape, 1856 (oil on canvas)

Webb, Byron (fl.1844-66)

CH3502564

Galaxies NGC 3718 and NGC 3729 in the Great Bear

Galaxies NGC 3718 and NGC 3729 in the Great Bear

Adam Block

PIX4611005

Swan Lace - detail - This delicate Hubble Space Telescope image shows a tiny portion of the Cygnus loop, a supernova remnant in the constellation of Cygnus, the Swan. Measurements on this super - detailed image of a cosmic veil shows that the original supernova explosion took place only 5000 years ago. The Cygnus loop, also known as the Veil Nebula, is well - known to amateur astronomers as a challenging target for larger telescopes. It has a diameter of about 3 degrees (corresponding to 6 full moons). This spectacular nebula was created when a massive star ended its days in an immense supernova explosion. A bubble of dust and gas was expelled into space and has continued to expand outwards ever since. The Cygnus Loop consists of two main arcs, designated NGC 6992/95 for the Eastern arc and NGC 6960 for the Western arc (also called the Witch's Broom Nebula). The tiny area of the Hubble image is seen in the upper left - hand corner of the nebula, at the outer edge of one of the large fi

Swan Lace - detail - This delicate Hubble Space Telescope image shows a tiny portion of the Cygnus loop, a supernova remnant in the constellation of Cygnus, the Swan. Measurements on this super - detailed image of a cosmic veil shows that the original supernova explosion took place only 5000 years ago. The Cygnus loop, also known as the Veil Nebula, is well - known to amateur astronomers as a challenging target for larger telescopes. It has a diameter of about 3 degrees (corresponding to 6 full moons). This spectacular nebula was created when a massive star ended its days in an immense supernova explosion. A bubble of dust and gas was expelled into space and has continued to expand outwards ever since. The Cygnus Loop consists of two main arcs, designated NGC 6992/95 for the Eastern arc and NGC 6960 for the Western arc (also called the Witch's Broom Nebula). The tiny area of the Hubble image is seen in the upper left - hand corner of the nebula, at the outer edge of one of the large fi

PIX4582633

Artist's impression of sunset on the super - Earth world Gliese 667 Cc - This artist's view represents a sunset seen from Super Earth Gliese 667Cc. The brightest star in the sky is the red dwarf Gliese 667 C, which is part of a triple star system. The other two more distant stars, Gliese 667 A and B also appear right in the sky. Gliese 667 Cc is an exoplanet orbiting the star Gliese 667 C, located about 23 years from Earth in the constellation of the scorpion. This super Earth was detected using the HARPS program at the La Silla Observatory in Chile in October 2009. This artist's impression shows a sunset seen from the super - Earth Gliese 667 Cc. The brightest star in the sky is the red dwarf Gliese 667 C, which is part of a triple star system. The other two more distant stars, Gliese 667 A and B appear in the sky also to the right. On 19 October 2009, the team who built the High Accuracy Radial Velocity Planet Searcher, better known as HARPS, the spectrograph for ESO's 3.6 - metre te

Artist's impression of sunset on the super - Earth world Gliese 667 Cc - This artist's view represents a sunset seen from Super Earth Gliese 667Cc. The brightest star in the sky is the red dwarf Gliese 667 C, which is part of a triple star system. The other two more distant stars, Gliese 667 A and B also appear right in the sky. Gliese 667 Cc is an exoplanet orbiting the star Gliese 667 C, located about 23 years from Earth in the constellation of the scorpion. This super Earth was detected using the HARPS program at the La Silla Observatory in Chile in October 2009. This artist's impression shows a sunset seen from the super - Earth Gliese 667 Cc. The brightest star in the sky is the red dwarf Gliese 667 C, which is part of a triple star system. The other two more distant stars, Gliese 667 A and B appear in the sky also to the right. On 19 October 2009, the team who built the High Accuracy Radial Velocity Planet Searcher, better known as HARPS, the spectrograph for ESO's 3.6 - metre te

PIX4573998

Orion's Trapeze - Trapezium Multiple Star System in Orion - Orion's Trapeze is one of the youngest open clusters known, with new stars still forming in this region. The Trapezium is the most famous multiple star system in the entire night sky. Located at the very heart of M42, the Orion Nebula, it is one of the youngest star clusters known. The four brightest stars in the Trapezium (A, B, C and D) are easily visible in a four inch telescope with decent optical quality under good seeing conditions. They range in brightness from magnitude 5 to magnitude 8. They can be seen merged together as one star to the unaided eye as the middle star in the sword of Orion. The image above shows the four brightest stars of the Trapezium at the center of the photo. The core of M42 surrounding the Trapezium is a blue - green color from the predominantly green spectral emission line of Oxygen III, with a smaller amount of blue - green mixed in from the hydrogen - beta emission line. These particular wave

Orion's Trapeze - Trapezium Multiple Star System in Orion - Orion's Trapeze is one of the youngest open clusters known, with new stars still forming in this region. The Trapezium is the most famous multiple star system in the entire night sky. Located at the very heart of M42, the Orion Nebula, it is one of the youngest star clusters known. The four brightest stars in the Trapezium (A, B, C and D) are easily visible in a four inch telescope with decent optical quality under good seeing conditions. They range in brightness from magnitude 5 to magnitude 8. They can be seen merged together as one star to the unaided eye as the middle star in the sword of Orion. The image above shows the four brightest stars of the Trapezium at the center of the photo. The core of M42 surrounding the Trapezium is a blue - green color from the predominantly green spectral emission line of Oxygen III, with a smaller amount of blue - green mixed in from the hydrogen - beta emission line. These particular wave

Jerry Lodriguss

PIX4617879

Centaurus A elliptical galaxy (NGC 5128) in Centaurus - Galaxy Centaurus A (NGC 5128) - The galaxy NGC 5128 is located about 13 million light years away from Earth in the southern constellation of Centaurus. A broad dark band crosses it in the middle, a probable vestige of a collision with a spiral galaxy. This Giant Galaxy is a powerful radio source known as Centaurus A. It is an active galaxy whose energy comes from a supermassive black hole. The green dot visible in the dust strip is a supernova, the supernova 1986g. It appears green because the red filter image that made this trichromy image was only taken a year after the event and the supernova had weakened. Image obtained from the 3.9m telescope of Siding Spring, Australia. Centaurus A is a most unusual galaxy. The circular, uniformly bright portion is composed of several thousand million stars, most of them old and yellowish. The galaxy is girded by a dense dust lane which obscures and reddens the light of stars behind it. Some

Centaurus A elliptical galaxy (NGC 5128) in Centaurus - Galaxy Centaurus A (NGC 5128) - The galaxy NGC 5128 is located about 13 million light years away from Earth in the southern constellation of Centaurus. A broad dark band crosses it in the middle, a probable vestige of a collision with a spiral galaxy. This Giant Galaxy is a powerful radio source known as Centaurus A. It is an active galaxy whose energy comes from a supermassive black hole. The green dot visible in the dust strip is a supernova, the supernova 1986g. It appears green because the red filter image that made this trichromy image was only taken a year after the event and the supernova had weakened. Image obtained from the 3.9m telescope of Siding Spring, Australia. Centaurus A is a most unusual galaxy. The circular, uniformly bright portion is composed of several thousand million stars, most of them old and yellowish. The galaxy is girded by a dense dust lane which obscures and reddens the light of stars behind it. Some

PIX4612278

Centre de la nebula Omega (M17) by HST - Center of the Omega Nebula, a hotbed of newly born stars wrapped in colorful blankets of glowing gas and cradled in an enormous cold, dark hydrogen cloud. This picture was taken by the Advanced Camera for Surveys (ACS) aboard Nasa's Hubble Space Telescope. The region of the nebula shown in this photograph is about 3,500 times wider than our solar system. The area represents about 60 percent of the total view captured by ACS. The nebula, also called M17 and the Swan Nebula, resides 5,500 light - years away in the constellation Sagittarius. Like its famous cousin in Orion, the Swan Nebula is illuminated by ultraviolet radiation from young, massive stars, located just beyond the upper right corner of the image. Each star is about six times hotter and 30 times more massive than the Sun. The powerful radiation from these stars evaporates and erodes the dense cloud of cold gas within which the stars formed. The blistered walls of the hollow cloud shin

Centre de la nebula Omega (M17) by HST - Center of the Omega Nebula, a hotbed of newly born stars wrapped in colorful blankets of glowing gas and cradled in an enormous cold, dark hydrogen cloud. This picture was taken by the Advanced Camera for Surveys (ACS) aboard Nasa's Hubble Space Telescope. The region of the nebula shown in this photograph is about 3,500 times wider than our solar system. The area represents about 60 percent of the total view captured by ACS. The nebula, also called M17 and the Swan Nebula, resides 5,500 light - years away in the constellation Sagittarius. Like its famous cousin in Orion, the Swan Nebula is illuminated by ultraviolet radiation from young, massive stars, located just beyond the upper right corner of the image. Each star is about six times hotter and 30 times more massive than the Sun. The powerful radiation from these stars evaporates and erodes the dense cloud of cold gas within which the stars formed. The blistered walls of the hollow cloud shin

PIX4620159

Open cluster Westerlund 1 in the Altar - Open cluster Westerlund 1 in Ara - The open cluster Westerlund 1 is located about 16,000 years - light in the southern constellation of the Altar. It contains hundreds of very young massive stars as well as the supergiant red star W26. Image obtained by the VST telescope in Chile. This exceptionally bright cluster lies about 16 000 light - years from Earth in the southern constellation of Ara (The Altar). It contains hundreds of very massive and brilliant stars, all of which are just a few million years old - - babies by stellar standards. But our view of this cluster is hampered by gas and dust that prevents most of the visible light from the cluster's stars from getting to Earth. Around one of the stars - - known as W26, a red supergiant and possibly the biggest star known - - astronomers have discovered clouds of glowing hydrogen gas, shown as green features in this new image. Such glowing clouds around massive stars are very rare, and are ev

Open cluster Westerlund 1 in the Altar - Open cluster Westerlund 1 in Ara - The open cluster Westerlund 1 is located about 16,000 years - light in the southern constellation of the Altar. It contains hundreds of very young massive stars as well as the supergiant red star W26. Image obtained by the VST telescope in Chile. This exceptionally bright cluster lies about 16 000 light - years from Earth in the southern constellation of Ara (The Altar). It contains hundreds of very massive and brilliant stars, all of which are just a few million years old - - babies by stellar standards. But our view of this cluster is hampered by gas and dust that prevents most of the visible light from the cluster's stars from getting to Earth. Around one of the stars - - known as W26, a red supergiant and possibly the biggest star known - - astronomers have discovered clouds of glowing hydrogen gas, shown as green features in this new image. Such glowing clouds around massive stars are very rare, and are ev

PIX4569073

The planetary nebula Dumbbell (M27) is located about 1200 light years from Earth in the constellation Little Fox. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. In this image the nova appeared on August 18, 2005 is visible. The Dumbbell Nebula (M27, NGC6853), is a planetary nebula located about 1200 light years from the earth in the constellation of Vulpecula. The nebula was formed when an evolved, red giant star ejected its outer envelope near the end of its lifetime. The expanding cloud of gas becomes visible once the hot core of the star, visible near the center, is exposed and the high-energy, ultraviolet light from the core ionizes the cloud. On the evening of August 17- 18, 2005, two European astronomers simultaneously discovered a new star in the Dumbbell Nebula. This image is a portrait of the Dumbbell Nebula featuring the 2005 nova. It is comprised of thirty separate fifte

The planetary nebula Dumbbell (M27) is located about 1200 light years from Earth in the constellation Little Fox. A planetary nebula is a gas shell from a small late-life star whose heart collapsed to become a white dwarf and expelled the outer layers of its matter. In this image the nova appeared on August 18, 2005 is visible. The Dumbbell Nebula (M27, NGC6853), is a planetary nebula located about 1200 light years from the earth in the constellation of Vulpecula. The nebula was formed when an evolved, red giant star ejected its outer envelope near the end of its lifetime. The expanding cloud of gas becomes visible once the hot core of the star, visible near the center, is exposed and the high-energy, ultraviolet light from the core ionizes the cloud. On the evening of August 17- 18, 2005, two European astronomers simultaneously discovered a new star in the Dumbbell Nebula. This image is a portrait of the Dumbbell Nebula featuring the 2005 nova. It is comprised of thirty separate fifte

R. Jay GaBany

PIX4623431

Tethys, Saturn satellite, seen by the Cassini probe - Saturn's moon Tethys seen by Cassini spacecraft - The Tethys satellite photographed by the Cassini probe on August 30, 2007 at a distance of 97,000 km. Tethys is about 1070 km in diameter. At the top left of the picture is the gigantic impact crater Odysseus, which measures 450 km in diameter. The vast expanse of the crater Odysseus spreads out below Cassini in this mosaic view of Saturn's moon Tethys. The crater (450 kilometers or 280 miles across) is a remarkably well - preserved example of an ancient multi - ringed impact basin: the outer ring is defined by steep, cliff - like walls that descend to generally broad internal terraces. The inner ring is formed by a prominent, crown - shaped, 140 - kilometer (88 - mile) diameter circular band of icy mountains. Multi - ring basins are seen on rocky bodies as well as icy ones. The complex internal structure and multi - ringed nature of these very large basins are believed to arise from

Tethys, Saturn satellite, seen by the Cassini probe - Saturn's moon Tethys seen by Cassini spacecraft - The Tethys satellite photographed by the Cassini probe on August 30, 2007 at a distance of 97,000 km. Tethys is about 1070 km in diameter. At the top left of the picture is the gigantic impact crater Odysseus, which measures 450 km in diameter. The vast expanse of the crater Odysseus spreads out below Cassini in this mosaic view of Saturn's moon Tethys. The crater (450 kilometers or 280 miles across) is a remarkably well - preserved example of an ancient multi - ringed impact basin: the outer ring is defined by steep, cliff - like walls that descend to generally broad internal terraces. The inner ring is formed by a prominent, crown - shaped, 140 - kilometer (88 - mile) diameter circular band of icy mountains. Multi - ring basins are seen on rocky bodies as well as icy ones. The complex internal structure and multi - ringed nature of these very large basins are believed to arise from

PIX4625574

Two space shuttles on fire pads. 09/2008 - Two Space Shuttles on launch pads. 09/2008 - View of shooting steps A and B from the Kennedy Space center in Florida on September 20, 2008. In the foreground, the shuttle Atlantis, in the background, the shuttle Endeavour on firing pad B. This is the first time since July 2001 that two shuttles have been simultaneously on the firing steps. The shuttle Endeavour was ready to assist the shuttle Atlantis for a rescue mission in case of a problem. Finally, the planned flight of the Atlantis shuttle (STS-125, repair of the Hubble satellite) was postponed until May 2009. The shuttle Endeavour collapsed in November 2008 to continue the construction of the international space station (mission STS-126). With a rainbow serving as a backdrop in the sky, space shuttle Atlantis (foreground) sits on Launch Pad A and Endeavour on Launch Pad B at Nasa's Kennedy Space Center in Florida. At the left of each shuttle are the open rotating service structures with

Two space shuttles on fire pads. 09/2008 - Two Space Shuttles on launch pads. 09/2008 - View of shooting steps A and B from the Kennedy Space center in Florida on September 20, 2008. In the foreground, the shuttle Atlantis, in the background, the shuttle Endeavour on firing pad B. This is the first time since July 2001 that two shuttles have been simultaneously on the firing steps. The shuttle Endeavour was ready to assist the shuttle Atlantis for a rescue mission in case of a problem. Finally, the planned flight of the Atlantis shuttle (STS-125, repair of the Hubble satellite) was postponed until May 2009. The shuttle Endeavour collapsed in November 2008 to continue the construction of the international space station (mission STS-126). With a rainbow serving as a backdrop in the sky, space shuttle Atlantis (foreground) sits on Launch Pad A and Endeavour on Launch Pad B at Nasa's Kennedy Space Center in Florida. At the left of each shuttle are the open rotating service structures with

PIX4649091

Two space shuttles on fire pads. 09/2008 - Two Space Shuttles on launch pads. 09/2008 - View of shooting steps A and B from the Kennedy Space center in Florida on September 20, 2008. In the foreground, the shuttle Atlantis, in the background, the shuttle Endeavour on firing pad B. This is the first time since July 2001 that two shuttles have been simultaneously on the firing steps. The shuttle Endeavour was ready to assist the shuttle Atlantis for a rescue mission in case of a problem. Finally, the planned flight of the Atlantis shuttle (STS-125, repair of the Hubble satellite) was postponed until May 2009. The shuttle Endeavour collapsed in November 2008 to continue the construction of the international space station (mission STS-126). Space shuttle Atlantis (foreground) sits on Launch Pad A and Endeavour on Launch Pad B at Nasa's Kennedy Space Center in Florida. At the left of each shuttle are the open rotating service structures with the payload changeout rooms revealed. The rotatin

Two space shuttles on fire pads. 09/2008 - Two Space Shuttles on launch pads. 09/2008 - View of shooting steps A and B from the Kennedy Space center in Florida on September 20, 2008. In the foreground, the shuttle Atlantis, in the background, the shuttle Endeavour on firing pad B. This is the first time since July 2001 that two shuttles have been simultaneously on the firing steps. The shuttle Endeavour was ready to assist the shuttle Atlantis for a rescue mission in case of a problem. Finally, the planned flight of the Atlantis shuttle (STS-125, repair of the Hubble satellite) was postponed until May 2009. The shuttle Endeavour collapsed in November 2008 to continue the construction of the international space station (mission STS-126). Space shuttle Atlantis (foreground) sits on Launch Pad A and Endeavour on Launch Pad B at Nasa's Kennedy Space Center in Florida. At the left of each shuttle are the open rotating service structures with the payload changeout rooms revealed. The rotatin

PIX4649108

Southern Crown Nebula - The tail of the CRA reflection nebula - R Coronae Australis is a region of star formations visible in the southern hemisphere. It is located about 500 light years away from Earth. On the right, the globular cluster NGC 6723, located 30 000 light years from Earth in Sagittarius. Image made with the 1.2m Telescope of Schmidt UK from Siding Spring. Corona Australis (the southern crown, CRA) is in the far southern sky but visible from the southern states of the USA. The constellation is small but distinctive. The conspicuous globular cluster NGC 6723 is at the western (right) edge of the photograph, but it is in Sagittarius, and is about 30,000 light years distant. Our picture is about 4.5 degrees across and the extremely faint Corona Australis nebula meanders along the Sgr - CRA border nebula in the same E - W direction. Almost all the nebulosity here is starlight, reflected from minute grains of dust, some of which gather into darker condensations ('molecular clou

Southern Crown Nebula - The tail of the CRA reflection nebula - R Coronae Australis is a region of star formations visible in the southern hemisphere. It is located about 500 light years away from Earth. On the right, the globular cluster NGC 6723, located 30 000 light years from Earth in Sagittarius. Image made with the 1.2m Telescope of Schmidt UK from Siding Spring. Corona Australis (the southern crown, CRA) is in the far southern sky but visible from the southern states of the USA. The constellation is small but distinctive. The conspicuous globular cluster NGC 6723 is at the western (right) edge of the photograph, but it is in Sagittarius, and is about 30,000 light years distant. Our picture is about 4.5 degrees across and the extremely faint Corona Australis nebula meanders along the Sgr - CRA border nebula in the same E - W direction. Almost all the nebulosity here is starlight, reflected from minute grains of dust, some of which gather into darker condensations ('molecular clou

PIX4620260

Planetary nebula NGC 7027 in the Swan/HST - This NASA Hubble Space Telescope image of planetary nebula NGC 7027 shows remarkable new details of the process by which a star like the Sun dies. New features include: faint, blue, concentric shells surrounding the nebula; an extensive network of red dust clouds throughout the bright inner region; and the hot central white dwarf, visible as a white dot at the center. The nebula is a record of the star's final death throes. Initially the ejection of the star's outer layers, when it was at its red giant stage of evolution, occurred at a low rate and was spherical. The Hubble photo reveals that the initial ejections occurred episodically to produce the concentric shells. This culminated in a vigorous ejection of all of the remaining outer layers, which produced the bright inner regions. At this later stage the ejection was non - spherical, and dense clouds of dust condensed from the ejected material. NGC 7027 is located about 3,000 light - year

Planetary nebula NGC 7027 in the Swan/HST - This NASA Hubble Space Telescope image of planetary nebula NGC 7027 shows remarkable new details of the process by which a star like the Sun dies. New features include: faint, blue, concentric shells surrounding the nebula; an extensive network of red dust clouds throughout the bright inner region; and the hot central white dwarf, visible as a white dot at the center. The nebula is a record of the star's final death throes. Initially the ejection of the star's outer layers, when it was at its red giant stage of evolution, occurred at a low rate and was spherical. The Hubble photo reveals that the initial ejections occurred episodically to produce the concentric shells. This culminated in a vigorous ejection of all of the remaining outer layers, which produced the bright inner regions. At this later stage the ejection was non - spherical, and dense clouds of dust condensed from the ejected material. NGC 7027 is located about 3,000 light - year

PIX4623552

Planetary nebula IC 418 dans le Lievre/HST - IC 418: The “” Spirograph” Nebula Glowing like a multi - faceted jewel, the planetary nebula IC 418 lies about 2,000 light - years from Earth in the direction of the constellation Lepus. This photograph is from Nasa's Hubble Space Telescope, obtained with the Wide Field Planetary Camera 2. A planetary nebula represents the final stage in the evolution of a star similar to our Sun. The star at the center of IC 418 was a red giant a few thousand years ago, but then ejected its outer layers into space to form the nebula, which has now expanded to a diameter of about 0.1 light - year. The stellar remnant at the center is the hot core of the red giant, from which ultraviolet radiation floods out into the surrounding gas, causing it to fluoresce. Over the next several thousand years, the nebula will gradually disperse into space, and then the star will cool and fade away for billions of years as a white dwarf. Our own Sun is expected to undergo a

Planetary nebula IC 418 dans le Lievre/HST - IC 418: The “” Spirograph” Nebula Glowing like a multi - faceted jewel, the planetary nebula IC 418 lies about 2,000 light - years from Earth in the direction of the constellation Lepus. This photograph is from Nasa's Hubble Space Telescope, obtained with the Wide Field Planetary Camera 2. A planetary nebula represents the final stage in the evolution of a star similar to our Sun. The star at the center of IC 418 was a red giant a few thousand years ago, but then ejected its outer layers into space to form the nebula, which has now expanded to a diameter of about 0.1 light - year. The stellar remnant at the center is the hot core of the red giant, from which ultraviolet radiation floods out into the surrounding gas, causing it to fluoresce. Over the next several thousand years, the nebula will gradually disperse into space, and then the star will cool and fade away for billions of years as a white dwarf. Our own Sun is expected to undergo a

PIX4623677

Globular cluster M54 in Sagittarius - Globular cluster M54 in Sagittarius - The globular cluster M54 photographed by the Hubble space telescope (HST). M54 resides about 90,000 light years from Earth, in the dwarf galaxy of Sagittarius. The object shown in this beautiful Hubble image, dubbed Messier 54, could be just another globular cluster, but this dense and faint group of stars was in fact the first globular cluster found that is outside our galaxy. Discovered by the famous astronomer Charles Messier in 1778, Messier 54 belongs to a satellite of the Milky Way called the Sagittarius Dwarf Elliptical Galaxy. Messier had no idea of the significance of his discovery at the time, and it wasn't until over two centuries later, in 1994, that astronomers found Messier 54 to be part of the miniature galaxy and not our own. Current estimates indicate that the Sagittarius dwarf, and hence the cluster, is situated almost 90 000 light - years away - - more than three times as far from the centre

Globular cluster M54 in Sagittarius - Globular cluster M54 in Sagittarius - The globular cluster M54 photographed by the Hubble space telescope (HST). M54 resides about 90,000 light years from Earth, in the dwarf galaxy of Sagittarius. The object shown in this beautiful Hubble image, dubbed Messier 54, could be just another globular cluster, but this dense and faint group of stars was in fact the first globular cluster found that is outside our galaxy. Discovered by the famous astronomer Charles Messier in 1778, Messier 54 belongs to a satellite of the Milky Way called the Sagittarius Dwarf Elliptical Galaxy. Messier had no idea of the significance of his discovery at the time, and it wasn't until over two centuries later, in 1994, that astronomers found Messier 54 to be part of the miniature galaxy and not our own. Current estimates indicate that the Sagittarius dwarf, and hence the cluster, is situated almost 90 000 light - years away - - more than three times as far from the centre

PIX4565011

Amator Astronomer

Amator Astronomer

E. Perrin

PIX5619638

Two space shuttles on fire pads. 09/2008 - Two Space Shuttles on launch pads. 09/2008 - View of shooting steps A and B from the Kennedy Space center in Florida on September 20, 2008. In the foreground, the shuttle Atlantis, in the background, the shuttle Endeavour on firing pad B. This is the first time since July 2001 that two shuttles have been simultaneously on the firing steps. The shuttle Endeavour was ready to assist the shuttle Atlantis for a rescue mission in case of a problem. Finally, the planned flight of the Atlantis shuttle (STS-125, repair of the Hubble satellite) was postponed until May 2009. The shuttle Endeavour collapsed in November 2008 to continue the construction of the international space station (mission STS-126). With a rainbow serving as a backdrop in the sky, space shuttle Atlantis (foreground) sits on Launch Pad A and Endeavour on Launch Pad B at Nasa's Kennedy Space Center in Florida. At the left of each shuttle are the open rotating service structures with

Two space shuttles on fire pads. 09/2008 - Two Space Shuttles on launch pads. 09/2008 - View of shooting steps A and B from the Kennedy Space center in Florida on September 20, 2008. In the foreground, the shuttle Atlantis, in the background, the shuttle Endeavour on firing pad B. This is the first time since July 2001 that two shuttles have been simultaneously on the firing steps. The shuttle Endeavour was ready to assist the shuttle Atlantis for a rescue mission in case of a problem. Finally, the planned flight of the Atlantis shuttle (STS-125, repair of the Hubble satellite) was postponed until May 2009. The shuttle Endeavour collapsed in November 2008 to continue the construction of the international space station (mission STS-126). With a rainbow serving as a backdrop in the sky, space shuttle Atlantis (foreground) sits on Launch Pad A and Endeavour on Launch Pad B at Nasa's Kennedy Space Center in Florida. At the left of each shuttle are the open rotating service structures with

PIX4649085

Two space shuttles on fire pads. 09/2008 - Two Space Shuttles on launch pads. 09/2008 - View of shooting steps A and B from the Kennedy Space center in Florida on September 20, 2008. In the foreground, the shuttle Atlantis, in the background, the shuttle Endeavour on firing pad B. This is the first time since July 2001 that two shuttles have been simultaneously on the firing steps. The shuttle Endeavour was ready to assist the shuttle Atlantis for a rescue mission in case of a problem. Finally, the planned flight of the Atlantis shuttle (STS-125, repair of the Hubble satellite) was postponed until May 2009. The shuttle Endeavour collapsed in November 2008 to continue the construction of the international space station (mission STS-126). Space shuttle Atlantis (foreground) sits on Launch Pad A and Endeavour on Launch Pad B at Nasa's Kennedy Space Center in Florida. At the left of each shuttle are the open rotating service structures with the payload changeout rooms revealed. The rotatin

Two space shuttles on fire pads. 09/2008 - Two Space Shuttles on launch pads. 09/2008 - View of shooting steps A and B from the Kennedy Space center in Florida on September 20, 2008. In the foreground, the shuttle Atlantis, in the background, the shuttle Endeavour on firing pad B. This is the first time since July 2001 that two shuttles have been simultaneously on the firing steps. The shuttle Endeavour was ready to assist the shuttle Atlantis for a rescue mission in case of a problem. Finally, the planned flight of the Atlantis shuttle (STS-125, repair of the Hubble satellite) was postponed until May 2009. The shuttle Endeavour collapsed in November 2008 to continue the construction of the international space station (mission STS-126). Space shuttle Atlantis (foreground) sits on Launch Pad A and Endeavour on Launch Pad B at Nasa's Kennedy Space Center in Florida. At the left of each shuttle are the open rotating service structures with the payload changeout rooms revealed. The rotatin

PIX4649103

Various Space Launches ISS, 2000s

Various Space Launches ISS, 2000s

BOF6283303

Persee Galaxy Cluster - Perseus galaxy cluster - The Persee galaxy cluster (Abell 426) contains at least 500 galaxies including the large elliptical galaxy NGC 1275. This galaxy (the galaxy with pink filaments to the left of the image) is located about 235 million years ago - light; it is a very strong source of radio wave transmission known as Perseus A. In the right center of the image, note the presence of a supernova, SN 2008fg, in a small blue spiral galaxy, NGC 1268. Perseus galaxy cluster (Abell 426) is a cluster of about 500 galaxies. The biggest (left) is NGC 1275, located 235 million light years away; it is a strong radio source known as Perseus A. The gravity exerted by the luminous parts of a galaxy cluster is insufficient to hold the cluster together. Thus, scientists have concluded the missing adhesive must be dark matter and since it's invisible to modern instruments - it can only be inferred. So, when one views the image of the Perseus Galaxy Cluster, ones sees only a s

Persee Galaxy Cluster - Perseus galaxy cluster - The Persee galaxy cluster (Abell 426) contains at least 500 galaxies including the large elliptical galaxy NGC 1275. This galaxy (the galaxy with pink filaments to the left of the image) is located about 235 million years ago - light; it is a very strong source of radio wave transmission known as Perseus A. In the right center of the image, note the presence of a supernova, SN 2008fg, in a small blue spiral galaxy, NGC 1268. Perseus galaxy cluster (Abell 426) is a cluster of about 500 galaxies. The biggest (left) is NGC 1275, located 235 million light years away; it is a strong radio source known as Perseus A. The gravity exerted by the luminous parts of a galaxy cluster is insufficient to hold the cluster together. Thus, scientists have concluded the missing adhesive must be dark matter and since it's invisible to modern instruments - it can only be inferred. So, when one views the image of the Perseus Galaxy Cluster, ones sees only a s

R. Jay GaBany

PIX4565332

Red Dwarf Star Proxima of Centauri - Proxima Centauri in X - Ray - Proxima of Centaur (in the center of the image) is the closest star to the Sun, at a distance of 4.2 years - light. It belongs to the triple Alpha star system of the Centaurus being the least bright star of this system; it is a red dwarf star. X-ray image obtained by the Chandra space telescope. Chandra and XMM - Newton observations of the red dwarf star Proxima Centauri have shown that its surface is in a state of turmoil. Flares, or explosive outbursts, occur almost continually. This behavior can be traced to Proxima Centauri's low mass, about a tenth that of the Sun. In the cores of low mass stars, nuclear fusion reactions that convert hydrogen to helium proceed very slowly, and create a turbulent, convective motion throughout their interiors. This motion stores up magnetic energy which is often released explosively in the star's upper atmosphere where it produces flares in X - rays and other forms of light. The same

Red Dwarf Star Proxima of Centauri - Proxima Centauri in X - Ray - Proxima of Centaur (in the center of the image) is the closest star to the Sun, at a distance of 4.2 years - light. It belongs to the triple Alpha star system of the Centaurus being the least bright star of this system; it is a red dwarf star. X-ray image obtained by the Chandra space telescope. Chandra and XMM - Newton observations of the red dwarf star Proxima Centauri have shown that its surface is in a state of turmoil. Flares, or explosive outbursts, occur almost continually. This behavior can be traced to Proxima Centauri's low mass, about a tenth that of the Sun. In the cores of low mass stars, nuclear fusion reactions that convert hydrogen to helium proceed very slowly, and create a turbulent, convective motion throughout their interiors. This motion stores up magnetic energy which is often released explosively in the star's upper atmosphere where it produces flares in X - rays and other forms of light. The same

PIX4571790

Central region of the elliptical galaxy Centaurus A (NGC 5128) - Central part of the galaxy Centaurus A (NGC 5128) - The galaxy NGC 5128 is located about 13 million years away from Earth in the southern constellation of Centaurus. A broad dark band crosses it in the middle, a probable vestige of a collision with a spiral galaxy. This giant galaxy is a powerful radio source known as Centaurus A. It is an active galaxy whose energy comes from a supermassive black hole. The green dot visible in the dust strip is a supernova, the supernova 1986g. It appears green because the red filter image that made this trichromy image was only taken a year after the event and the supernova had weakened. Image obtained from the 3.9m telescope of Siding Spring, Australia. The nearby radio source Centaurus A (NGC 5128) looks like an elliptical galaxy, crossed by a broad, irregular dust lane. The dark band is probably the remains of a dusty spiral galaxy which is being absorbed by the giant elliptical. One

Central region of the elliptical galaxy Centaurus A (NGC 5128) - Central part of the galaxy Centaurus A (NGC 5128) - The galaxy NGC 5128 is located about 13 million years away from Earth in the southern constellation of Centaurus. A broad dark band crosses it in the middle, a probable vestige of a collision with a spiral galaxy. This giant galaxy is a powerful radio source known as Centaurus A. It is an active galaxy whose energy comes from a supermassive black hole. The green dot visible in the dust strip is a supernova, the supernova 1986g. It appears green because the red filter image that made this trichromy image was only taken a year after the event and the supernova had weakened. Image obtained from the 3.9m telescope of Siding Spring, Australia. The nearby radio source Centaurus A (NGC 5128) looks like an elliptical galaxy, crossed by a broad, irregular dust lane. The dark band is probably the remains of a dusty spiral galaxy which is being absorbed by the giant elliptical. One

PIX4612262

Proto - planetary nebula OH231.8+4.2 dans la Poupe/HST

Proto - planetary nebula OH231.8+4.2 dans la Poupe/HST

PIX4623703

Rear Admiral Frederick William Fane Hervey, 4th Marquess of Bristol (1863-1951)

Rear Admiral Frederick William Fane Hervey, 4th Marquess of Bristol (1863-1951)

Cope, Arthur Stockdale (1857-1940)

USB1156522

Panorama of galactic center seen in infrared

Panorama of galactic center seen in infrared

PIX4637943

Star Birth in Scorpio - Stellar nursery in Scorpius - RCW 120 is a star-forming region about 4200 years from Earth in the constellation Scorpio. In the center a hot and massive star emits powerful ultraviolet radiation, which ionize the surrounding gas, tearing off electrons from the hydrogen atoms and producing the characteristic red glow of H - alpha emissions. As this ionized region extends into space, the associated shock wave meets the surrounding cold interstellar gas and cosmic dust. This gas becomes unstable and collapses under its own gravite forming dense, cold clouds or new stars will be born. These very cold clouds (- 250 degres Celsius) can only be detected in submillimetre wavelength; they appear here in blue thanks to the data obtained by the APEX telescope which observes this radiation. Illustrating the power of submillimetre - wavelength astronomy, an APEX image reveals how an expanding bubble of ionised gas about ten light - years across is causing the surrounding mat

Star Birth in Scorpio - Stellar nursery in Scorpius - RCW 120 is a star-forming region about 4200 years from Earth in the constellation Scorpio. In the center a hot and massive star emits powerful ultraviolet radiation, which ionize the surrounding gas, tearing off electrons from the hydrogen atoms and producing the characteristic red glow of H - alpha emissions. As this ionized region extends into space, the associated shock wave meets the surrounding cold interstellar gas and cosmic dust. This gas becomes unstable and collapses under its own gravite forming dense, cold clouds or new stars will be born. These very cold clouds (- 250 degres Celsius) can only be detected in submillimetre wavelength; they appear here in blue thanks to the data obtained by the APEX telescope which observes this radiation. Illustrating the power of submillimetre - wavelength astronomy, an APEX image reveals how an expanding bubble of ionised gas about ten light - years across is causing the surrounding mat

PIX4621694

The Hanger and Nebula SH2 - 83 - Coathanger and nebula SH2 - 83 in Vulpecula - The Hanger cluster or Brocchi cluster (left) is not a true cluster of stars but an asterism located in the constellation of Little Fox. Towards the center of the image, a small nebula emitted, Sh2 - 83. Little Fox Constellation. Brocchi's Cluster (also known as the Coathanger or Collinder 399) is an asterism located in the constellation Vulpecula. It was first described by the Persian astronomer Al Sufi in his Book of Fixed Stars in 964 and was independently rediscovered by Giovanni Hodierna in the seventeenth century. In the 1920s, D. F. Brocchi, an amateur astronomer and chart maker for the American Association of Variable Star Observers, created a map of this object for use in calibrating photometers. The asterism is made up of ten stars ranging from fifth to seventh magnitude which form the conspicuous Coathanger, a straight line of six stars with a “” hook””” of four stars on the south side. An addition

The Hanger and Nebula SH2 - 83 - Coathanger and nebula SH2 - 83 in Vulpecula - The Hanger cluster or Brocchi cluster (left) is not a true cluster of stars but an asterism located in the constellation of Little Fox. Towards the center of the image, a small nebula emitted, Sh2 - 83. Little Fox Constellation. Brocchi's Cluster (also known as the Coathanger or Collinder 399) is an asterism located in the constellation Vulpecula. It was first described by the Persian astronomer Al Sufi in his Book of Fixed Stars in 964 and was independently rediscovered by Giovanni Hodierna in the seventeenth century. In the 1920s, D. F. Brocchi, an amateur astronomer and chart maker for the American Association of Variable Star Observers, created a map of this object for use in calibrating photometers. The asterism is made up of ten stars ranging from fifth to seventh magnitude which form the conspicuous Coathanger, a straight line of six stars with a “” hook””” of four stars on the south side. An addition

Tom Davis

PIX4620989

Pulsar of Crab in Taurus seen in X - The Crab nebula pulsar - Pulsar of Crab in Taurus seen in X by satellite Chandra. The pulsar is the white dot in the center of the image. This neutron star generates a powerful magnetic field creating material jets at the poles, as well as a strong stellar wind. This image gives the first clear view of the faint boundary of the Crab Nebula's X - ray - emitting pulsar wind nebula. The nebula is powered by a rapidly rotating, highly magnetized neutron star, or pulsar (white dot near the center). The combination of rapid rotating and strong magnetic field generates an intense electromagnetic field that creates jets of matter and anti - matter moving away from the north and south poles of the pulsar, and an intense wind flowing out in the equatorial direction. The inner X - ray ring is thought to be a shock wave that marks the boundary between the surrounding nebula and the flow of matter and antimatter particles from the pulsar. Energetic electrons and

Pulsar of Crab in Taurus seen in X - The Crab nebula pulsar - Pulsar of Crab in Taurus seen in X by satellite Chandra. The pulsar is the white dot in the center of the image. This neutron star generates a powerful magnetic field creating material jets at the poles, as well as a strong stellar wind. This image gives the first clear view of the faint boundary of the Crab Nebula's X - ray - emitting pulsar wind nebula. The nebula is powered by a rapidly rotating, highly magnetized neutron star, or pulsar (white dot near the center). The combination of rapid rotating and strong magnetic field generates an intense electromagnetic field that creates jets of matter and anti - matter moving away from the north and south poles of the pulsar, and an intense wind flowing out in the equatorial direction. The inner X - ray ring is thought to be a shock wave that marks the boundary between the surrounding nebula and the flow of matter and antimatter particles from the pulsar. Energetic electrons and

PIX4583131

Spiral Galaxy M31 in Andromede - Detail - The southern arm of the Andromeda galaxy, M31 - View of the southern arm of the Andromede galaxy. Visible to the naked eye, the Andromede galaxy is located about 2 million years away from Earth. In this image obtained in La Palma, one of its two satellite galaxies is visible to the north-east: M32 (NGC 221). Also visible is the star cloud NGC 206, low centre, one of the largest star formations regions of our local group. Like the lactee path, the Andromede galaxy belongs to the local group, which consists of about thirty galaxies. M31 is the finest and nearest large spiral galaxy in the sky, about 2 million light years away. Despite its distance it can be seen as an elongated streak with the unaided eye in northern skies and in a large telescope under good conditions it is clearly resolved into stars and star - forming regions. This picture shows less than half the galaxy but the spiral structure, star clouds and dust lanes are evident. Also he

Spiral Galaxy M31 in Andromede - Detail - The southern arm of the Andromeda galaxy, M31 - View of the southern arm of the Andromede galaxy. Visible to the naked eye, the Andromede galaxy is located about 2 million years away from Earth. In this image obtained in La Palma, one of its two satellite galaxies is visible to the north-east: M32 (NGC 221). Also visible is the star cloud NGC 206, low centre, one of the largest star formations regions of our local group. Like the lactee path, the Andromede galaxy belongs to the local group, which consists of about thirty galaxies. M31 is the finest and nearest large spiral galaxy in the sky, about 2 million light years away. Despite its distance it can be seen as an elongated streak with the unaided eye in northern skies and in a large telescope under good conditions it is clearly resolved into stars and star - forming regions. This picture shows less than half the galaxy but the spiral structure, star clouds and dust lanes are evident. Also he

PIX4608878

This Hubble picture, taken on 23 July 2009, is the sharpest visible

This Hubble picture, taken on 23 July 2009, is the sharpest visible

PIX5619661

Lord John Augustus Hervey (1757-1796)

Lord John Augustus Hervey (1757-1796)

Gainsborough, Thomas (1727-88)

USB1156530

Heart of the Nebula of the Lagoon (M8) in Sagittarius seen by HST - This NASA Hubble Space Telescope (HST) image reveals a pair of one - half light - year long interstellar “” twisters”” - - eerie funnels and twisted - rope structures (upper left) - - in the heart of the Lagoon Nebula (Messier 8) which lies 5,000 years - - away in the direction of the constellation Sagittarius. The central hot O type star, Herschel 36 (upper left in photo), is the primary source of the ionizing radiation for the brightest region in the nebula, called the Hourglass. Other hot stars, also present in the nebula, are ionizing the extended optical nebulosity. The ionizing radiation induces photo - evaporation of the surfaces of the clouds (seen as a blue “” mist”” at the right of the image), and drives away violent stellar winds tearing into the cool clouds.Analogous to the spectacular phenomena of Earth tornadoes, the large difference in temperature between the hot surface and cold interior of the clouds,

Heart of the Nebula of the Lagoon (M8) in Sagittarius seen by HST - This NASA Hubble Space Telescope (HST) image reveals a pair of one - half light - year long interstellar “” twisters”” - - eerie funnels and twisted - rope structures (upper left) - - in the heart of the Lagoon Nebula (Messier 8) which lies 5,000 years - - away in the direction of the constellation Sagittarius. The central hot O type star, Herschel 36 (upper left in photo), is the primary source of the ionizing radiation for the brightest region in the nebula, called the Hourglass. Other hot stars, also present in the nebula, are ionizing the extended optical nebulosity. The ionizing radiation induces photo - evaporation of the surfaces of the clouds (seen as a blue “” mist”” at the right of the image), and drives away violent stellar winds tearing into the cool clouds.Analogous to the spectacular phenomena of Earth tornadoes, the large difference in temperature between the hot surface and cold interior of the clouds,

PIX4619680

Antares star and the nebula Rho Ophiuchi - Antares and Rho Ophiuchi cloud - This coloree nebula represents the visible part of a very large molecule cloud, the cloud of Ophiuchus. This star-forming region is about 520 years old - light. The brightest star at the bottom left is the star Antares, from the Scorpio. The triple star Rho Ophiuchus is located in the middle of the blue cloud at the top of the picture. On the right, surrounded by a nebula, the star Sigma Scorpii. The globular clusters M4 (at the bottom of the image) and NGC 6144 (near Antares) are also visible on this image obtained with the UK Schmidt telescope of 1.2m. This photograph shows a portion of a great swath of obscuring gas and dust in the constellations Ophiuchus and Scorpius, and illustrates what is probably the most colourful region in the entire sky. The almost garish colours are due to the brilliance and contrasting colours of the stars, by whose reflected light we see the dust clouds. Dominating the picture is

Antares star and the nebula Rho Ophiuchi - Antares and Rho Ophiuchi cloud - This coloree nebula represents the visible part of a very large molecule cloud, the cloud of Ophiuchus. This star-forming region is about 520 years old - light. The brightest star at the bottom left is the star Antares, from the Scorpio. The triple star Rho Ophiuchus is located in the middle of the blue cloud at the top of the picture. On the right, surrounded by a nebula, the star Sigma Scorpii. The globular clusters M4 (at the bottom of the image) and NGC 6144 (near Antares) are also visible on this image obtained with the UK Schmidt telescope of 1.2m. This photograph shows a portion of a great swath of obscuring gas and dust in the constellations Ophiuchus and Scorpius, and illustrates what is probably the most colourful region in the entire sky. The almost garish colours are due to the brilliance and contrasting colours of the stars, by whose reflected light we see the dust clouds. Dominating the picture is

PIX4621421

Nebulae IC 2948 and 2944 in Centaur - A large southern emission nebula, IC 2948 - Nebula IC 2948 is a vast nebula located about 6000 years from Earth in the southern constellation of Centaur. It is associated with the cluster of stars IC 2944 near which Bok's blood cells are visible. A Bok's blood cell is a dark interstellar cloud of gases and dust that absorb light. If it condenses enough, it gives birth to new stars. IC2944 is a large HII region (star forming cloud) in the southern constellation of Centaurus. The bright blue star in the upper right is Lambda Centauri, one of the brightest stars in the southern sky.The cluster of hot blue stars to the right of center are illuminating the gases of IC2944 and causing it to glow in the red and magenta light of excited hydrogen. The compact black objects adjacent to the bright blue stars are called Thackeray's Globules named for the astronomer A.D. Thackeray who described these in 1950. Thackeray Globules are similar to Bok Globules which

Nebulae IC 2948 and 2944 in Centaur - A large southern emission nebula, IC 2948 - Nebula IC 2948 is a vast nebula located about 6000 years from Earth in the southern constellation of Centaur. It is associated with the cluster of stars IC 2944 near which Bok's blood cells are visible. A Bok's blood cell is a dark interstellar cloud of gases and dust that absorb light. If it condenses enough, it gives birth to new stars. IC2944 is a large HII region (star forming cloud) in the southern constellation of Centaurus. The bright blue star in the upper right is Lambda Centauri, one of the brightest stars in the southern sky.The cluster of hot blue stars to the right of center are illuminating the gases of IC2944 and causing it to glow in the red and magenta light of excited hydrogen. The compact black objects adjacent to the bright blue stars are called Thackeray's Globules named for the astronomer A.D. Thackeray who described these in 1950. Thackeray Globules are similar to Bok Globules which

R. Gendler

PIX4622567

Nebula NGC 6726 - 27 - 29 in the Southern Crown - The Corona Australis nebula (NGC 6726 - 27 - 29) Image of R Coronae Australis region in the southern Milky Way, obtained with the Wide Field Imager (WFI) (camera) at the 2.2 - m MPG/ESO Telescope on La Silla (Chile). The sky field shown measures approx. 33.7 x 31.9 arcmin2 (about the diameter of the full moon). The R Coronae Australis complex of young stars and interstellar gas clouds is one of the nearest star - forming regions, at a distance of approx. 500 light - years from the Sun. It is seen in the southern constellation of that name (The “Southern Crown”). R Coronae Australis, the bright star from which the entire complex is named, is located at the center of the field and illuminates the reddish nebula around it. The bright star in the lower part, illuminating a somewhat bluer nebula, is known as TY Coronae Australis. The brightness of these two stars and several others in the same field is variable. They belong to the so - calle

Nebula NGC 6726 - 27 - 29 in the Southern Crown - The Corona Australis nebula (NGC 6726 - 27 - 29) Image of R Coronae Australis region in the southern Milky Way, obtained with the Wide Field Imager (WFI) (camera) at the 2.2 - m MPG/ESO Telescope on La Silla (Chile). The sky field shown measures approx. 33.7 x 31.9 arcmin2 (about the diameter of the full moon). The R Coronae Australis complex of young stars and interstellar gas clouds is one of the nearest star - forming regions, at a distance of approx. 500 light - years from the Sun. It is seen in the southern constellation of that name (The “Southern Crown”). R Coronae Australis, the bright star from which the entire complex is named, is located at the center of the field and illuminates the reddish nebula around it. The bright star in the lower part, illuminating a somewhat bluer nebula, is known as TY Coronae Australis. The brightness of these two stars and several others in the same field is variable. They belong to the so - calle

PIX4620222

Reagan Announces Space Program

Reagan Announces Space Program

BOF6283171

Planetary nebula NGC 6543 in the Dragon/HST - This NASA Hubble Space Telescope image shows one of the most complex planetary nebulae ever seen, NGC 6543, nicknamed the “Cat's Eye Nebula.””” Hubble reveals surprisingly intricate structures including concentric gas shells, jets of high - speed gas and unusual shock - induced knots of gas. Estimated to be 1,000 years old, the nebula is a visual “” fossil record”” of the dynamics and late evolution of a dying star. A preliminary interpretation suggests that the star might be a double - star system. The dynamical effects of two stars orbiting one another most easily explains the intricate structures, which are much more complicated than features seen in most planetary nebulae. (The two stars are too close together to be individually resolved by Hubble, and instead, appear as a single point of light at the center of the nebula.) According to this model, a fast “” stellar wind””” of gas blown off the central star created the elongated shell o

Planetary nebula NGC 6543 in the Dragon/HST - This NASA Hubble Space Telescope image shows one of the most complex planetary nebulae ever seen, NGC 6543, nicknamed the “Cat's Eye Nebula.””” Hubble reveals surprisingly intricate structures including concentric gas shells, jets of high - speed gas and unusual shock - induced knots of gas. Estimated to be 1,000 years old, the nebula is a visual “” fossil record”” of the dynamics and late evolution of a dying star. A preliminary interpretation suggests that the star might be a double - star system. The dynamical effects of two stars orbiting one another most easily explains the intricate structures, which are much more complicated than features seen in most planetary nebulae. (The two stars are too close together to be individually resolved by Hubble, and instead, appear as a single point of light at the center of the nebula.) According to this model, a fast “” stellar wind””” of gas blown off the central star created the elongated shell o

PIX4623213

The Hubble Space Telescope's Near Infrared Camera and Multi - Object Spectrometer (NICMOS) has captured a glimpse of a brief stage in the burnout of NGC 7027, a medium - mass star like our sun. THE INFRARED VIEW - - The composite color image of NGC 7027 (on the left) is among the first data of a planetary nebula taken with NICMOS. This picture is actually composed of three separate images taken at different wavelengths. The red color represents cool molecular hydrogen gas, the most abundant gas in the universe. The image reveals the central star, which is difficult to see in images taken with visible light. Surrounding it is an elongated region of gas and dust cast off by the star. This gas (appearing as white) has a temperature of several tens of thousands of degrees Fahrenheit. The object has two “” cones”” of cool molecular hydrogen gas (the red material) glowing in the infrared. The gas has been energized by ultraviolet light from the star - a process known as fluorescence. Most of

The Hubble Space Telescope's Near Infrared Camera and Multi - Object Spectrometer (NICMOS) has captured a glimpse of a brief stage in the burnout of NGC 7027, a medium - mass star like our sun. THE INFRARED VIEW - - The composite color image of NGC 7027 (on the left) is among the first data of a planetary nebula taken with NICMOS. This picture is actually composed of three separate images taken at different wavelengths. The red color represents cool molecular hydrogen gas, the most abundant gas in the universe. The image reveals the central star, which is difficult to see in images taken with visible light. Surrounding it is an elongated region of gas and dust cast off by the star. This gas (appearing as white) has a temperature of several tens of thousands of degrees Fahrenheit. The object has two “” cones”” of cool molecular hydrogen gas (the red material) glowing in the infrared. The gas has been energized by ultraviolet light from the star - a process known as fluorescence. Most of

PIX4623549

Galaxies NGC 1316 and 1317 in the Furnace - Galaxies NGC 1316 and NGC 1317 in Fornax - The giant elliptical galaxy NGC 1316 (below) absorbed a spiral galaxy a few billion years ago. A few bands of dust visible in the centre are the traces of this feast. A spiral galaxy, NGC 1317, is visible just above it. These galaxies resident more than 60 million years ago - light in the array of galaxies of the Furnace. Also called Fornax A, NGC 1316 is one of the strongest radio sources in the sky. Image made with Siding Spring's 3.9m telescope. NGC 1316 - 17 are on the outskirts of a nearby cluster of galaxies in the southern constellation of Fornax, at a distance of about 60 million light years. At first glance, the optical image of these galaxies does not seem to be very unusual. However, closer inspection shows that the larger galaxy, the elliptical NGC 1316, has distinct dust lanes in its inner regions, and NGC 1317 is a strangely distorted spiral. The dust lanes strongly suggest that NGC 131

Galaxies NGC 1316 and 1317 in the Furnace - Galaxies NGC 1316 and NGC 1317 in Fornax - The giant elliptical galaxy NGC 1316 (below) absorbed a spiral galaxy a few billion years ago. A few bands of dust visible in the centre are the traces of this feast. A spiral galaxy, NGC 1317, is visible just above it. These galaxies resident more than 60 million years ago - light in the array of galaxies of the Furnace. Also called Fornax A, NGC 1316 is one of the strongest radio sources in the sky. Image made with Siding Spring's 3.9m telescope. NGC 1316 - 17 are on the outskirts of a nearby cluster of galaxies in the southern constellation of Fornax, at a distance of about 60 million light years. At first glance, the optical image of these galaxies does not seem to be very unusual. However, closer inspection shows that the larger galaxy, the elliptical NGC 1316, has distinct dust lanes in its inner regions, and NGC 1317 is a strangely distorted spiral. The dust lanes strongly suggest that NGC 131

PIX4609824

Artemis communication satellite - Artemis satellite communication. Artwork - Artist's view of the European satellite Artemis (Advanced Relay and Technology Mission). Communication and relay satellite for other satellites, it was launched in July 2001. Built by ESA with an industrial team led by Italy's Alenia Spazio, Artemis carries three payloads plus a number of experiments developed to demonstrate new telecommunications technologies. The L - band Land Mobile (LLM) payload provides relay for two - way voice and data communications between fixed Earth stations and land mobiles - trucks, trains or cars - anywhere in Europe and North Africa. LLM is also broadcasting corrective GPS - like navigation signals for the European Global Navigation Overlay Service (EGNOS) programme, Europe's first satellite navigation system and a forerunner to the Galileo global navigation system. The other two primary payloads are designed to provide direct high data rate communications links between satellit

Artemis communication satellite - Artemis satellite communication. Artwork - Artist's view of the European satellite Artemis (Advanced Relay and Technology Mission). Communication and relay satellite for other satellites, it was launched in July 2001. Built by ESA with an industrial team led by Italy's Alenia Spazio, Artemis carries three payloads plus a number of experiments developed to demonstrate new telecommunications technologies. The L - band Land Mobile (LLM) payload provides relay for two - way voice and data communications between fixed Earth stations and land mobiles - trucks, trains or cars - anywhere in Europe and North Africa. LLM is also broadcasting corrective GPS - like navigation signals for the European Global Navigation Overlay Service (EGNOS) programme, Europe's first satellite navigation system and a forerunner to the Galileo global navigation system. The other two primary payloads are designed to provide direct high data rate communications links between satellit

J. Huart

PIX4642928

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