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The Moon, Venus and Jupiter - Crescent Moon, Venus and Jupiter - The Moon and Planets Venus (bottom) and Jupiter (right) seen on 1 December 2008. Two satellites of Jupiter are also visible, Ganymede and Callisto. A beautiful conjunction between the crescent Moon with Earthshine, brilliant Venus, and mighty Jupiter is seen in the fading twilight on the first day of December, 2008. These images were shot with a simple zoom lens on a digital camera on a fixed tripod. The Moon, at magnitude -7.9, is a waxing crescent, 4 days old. The crescent is lit by the direct light of the Sun. The “” dark”” side of the Moon can also be seen, lit by Earthshine - sunlight reflected from the day side of the Earth. Jupiter, at right, shines at magnitude -2.0. Venus, at the bottom of the image, shines at magnitude -4.1. Above and to the right of Venus, two faint 6th magnitude stars in Sagittarius can be seen. Two of Jupiter's four Galilean moons can also be seen, one on each side of the planet. Ganymede, at

The Moon, Venus and Jupiter - Crescent Moon, Venus and Jupiter - The Moon and Planets Venus (bottom) and Jupiter (right) seen on 1 December 2008. Two satellites of Jupiter are also visible, Ganymede and Callisto. A beautiful conjunction between the crescent Moon with Earthshine, brilliant Venus, and mighty Jupiter is seen in the fading twilight on the first day of December, 2008. These images were shot with a simple zoom lens on a digital camera on a fixed tripod. The Moon, at magnitude -7.9, is a waxing crescent, 4 days old. The crescent is lit by the direct light of the Sun. The “” dark”” side of the Moon can also be seen, lit by Earthshine - sunlight reflected from the day side of the Earth. Jupiter, at right, shines at magnitude -2.0. Venus, at the bottom of the image, shines at magnitude -4.1. Above and to the right of Venus, two faint 6th magnitude stars in Sagittarius can be seen. Two of Jupiter's four Galilean moons can also be seen, one on each side of the planet. Ganymede, at

Jerry Lodriguss

PIX4586995

Planetary nebula NGC 5189 in the Fly - NGC 5189 - Planetary nebula in Musca - This nebula is located about 3000 light years from Earth in the southern constellation of Fly. Image obtained by the Gemini telescope. NGC 5189 is a planetary nebula. At the end of its life, a star with a mass less than eight times that of the Sun will blow its outer layers away, giving rise to a planetary nebula. Some of these stellar puffballs are almost round, resembling huge soap bubbles or giant planets (hence the name), but others, such as NGC 5189 are more intricate. In particular, this planetary nebula exhibits a curious S” - shaped profile, with a central bar that is most likely the projection of an inner ring of gas discharged by the star, seen edge on. The details of the physical processes producing such a complex symmetry from a simple, spherical star are still the object of astronomical controversy. One possibility is that the star has a very close (but unseen) companion. Over time the orbits dri

Planetary nebula NGC 5189 in the Fly - NGC 5189 - Planetary nebula in Musca - This nebula is located about 3000 light years from Earth in the southern constellation of Fly. Image obtained by the Gemini telescope. NGC 5189 is a planetary nebula. At the end of its life, a star with a mass less than eight times that of the Sun will blow its outer layers away, giving rise to a planetary nebula. Some of these stellar puffballs are almost round, resembling huge soap bubbles or giant planets (hence the name), but others, such as NGC 5189 are more intricate. In particular, this planetary nebula exhibits a curious S” - shaped profile, with a central bar that is most likely the projection of an inner ring of gas discharged by the star, seen edge on. The details of the physical processes producing such a complex symmetry from a simple, spherical star are still the object of astronomical controversy. One possibility is that the star has a very close (but unseen) companion. Over time the orbits dri

PIX4623091

Constellation of Lyra - Constellation of Lyra - Constellation of Lyra with bright star Vega. Lyra, The Lyre is one of the 48 constellations listed by Ptolemy, and represents a stringed musical instrument widely used in Greek classical times. Apparently, the young god Hermes (Mercury) created the lyre from the body of a large tortoise shell covered with animal hide sporting antelope horns. The instrument is associated with the virtues of moderation and equilibrium, and was given by Hermes to his half - brother Apollo, who in turn gave it to his son Orpheus. Lyra is a small constellation, but rather obvious to the eye. Its principal star, Vega, is the second brightest star in the northern hemisphere and is also interesting because it is seen almost pole - on and is one of the most rapidly rotating stars known, so it could see it from a different direction it would appear distinctly flattened. Because of precession, Vega is destined to be the Pole Star in about 12,000 years. Entirely unco

Constellation of Lyra - Constellation of Lyra - Constellation of Lyra with bright star Vega. Lyra, The Lyre is one of the 48 constellations listed by Ptolemy, and represents a stringed musical instrument widely used in Greek classical times. Apparently, the young god Hermes (Mercury) created the lyre from the body of a large tortoise shell covered with animal hide sporting antelope horns. The instrument is associated with the virtues of moderation and equilibrium, and was given by Hermes to his half - brother Apollo, who in turn gave it to his son Orpheus. Lyra is a small constellation, but rather obvious to the eye. Its principal star, Vega, is the second brightest star in the northern hemisphere and is also interesting because it is seen almost pole - on and is one of the most rapidly rotating stars known, so it could see it from a different direction it would appear distinctly flattened. Because of precession, Vega is destined to be the Pole Star in about 12,000 years. Entirely unco

PIX4592258

Impact on the Moon at the Cretace - Cretaceous lunar strike - Artist's view of an asteroid impact on the Moon illuminating a nocturnal landscape of the cretace. In the foreground, a spinosaur, a theropod dinosaur who lived in what is now Egypt 95 to 93 million years ago. What may appear here as a diamond ring effect from a solar eclipse is in fact a brilliant and momentary flash of light signaling a massive asteroid impact on the Moon. The Moon and all the inner planets of the Solar System show evidence of a long and violent history of encounters with meteorites and asteroids - leftover debris from the formation of the Solar System. This image depicts an asteroid colliding with the Moon about 95 million years ago. The perspective is from the surface of the Earth in what today is Egypt. The impact would have released millions of times more energy than today's largest nuclear weapon, creating a flash of light that would be far brighter than any star in the sky. In the foreground of this

Impact on the Moon at the Cretace - Cretaceous lunar strike - Artist's view of an asteroid impact on the Moon illuminating a nocturnal landscape of the cretace. In the foreground, a spinosaur, a theropod dinosaur who lived in what is now Egypt 95 to 93 million years ago. What may appear here as a diamond ring effect from a solar eclipse is in fact a brilliant and momentary flash of light signaling a massive asteroid impact on the Moon. The Moon and all the inner planets of the Solar System show evidence of a long and violent history of encounters with meteorites and asteroids - leftover debris from the formation of the Solar System. This image depicts an asteroid colliding with the Moon about 95 million years ago. The perspective is from the surface of the Earth in what today is Egypt. The impact would have released millions of times more energy than today's largest nuclear weapon, creating a flash of light that would be far brighter than any star in the sky. In the foreground of this

Walter B Myers

PIX4662978

Lactee and Jupiter - Milky way and Jupiter - The Lactee Way accompanied by Jupiter, the bright planet on the left, seen from Cherry Springs State Park in the United States. The center of our own galaxy, the Milky Way, sets in the southwest as night begins at the Cherry Springs State Park, one of the darkest observing locations in the eastern United States. The Milky Way is a vast collection of more than 200 billion stars, planets, nebulae, clusters, dust and gas. Our own Sun and solar system are also part of the Milky Way galaxy. Seen as a luminous band of light and star clouds that stretch across the night sky, the brighter star clouds of the Milky Way are frequently mistaken for real Earth-bound clouds by observers who are unfamiliar with their appearance. Sometimes interrupted by dark nebulae and rifts, these star clouds are actually innumerable unresolved faint stars. The central bulge of the Milky Way, the brightest and most spectacular portion, is visible here in the Sagittarius

Lactee and Jupiter - Milky way and Jupiter - The Lactee Way accompanied by Jupiter, the bright planet on the left, seen from Cherry Springs State Park in the United States. The center of our own galaxy, the Milky Way, sets in the southwest as night begins at the Cherry Springs State Park, one of the darkest observing locations in the eastern United States. The Milky Way is a vast collection of more than 200 billion stars, planets, nebulae, clusters, dust and gas. Our own Sun and solar system are also part of the Milky Way galaxy. Seen as a luminous band of light and star clouds that stretch across the night sky, the brighter star clouds of the Milky Way are frequently mistaken for real Earth-bound clouds by observers who are unfamiliar with their appearance. Sometimes interrupted by dark nebulae and rifts, these star clouds are actually innumerable unresolved faint stars. The central bulge of the Milky Way, the brightest and most spectacular portion, is visible here in the Sagittarius

Jerry Lodriguss

PIX4637237

Constellation of Lyra - Constellation of Lyra - Constellation of Lyra with bright star Vega. Lyra, The Lyre is one of the 48 constellations listed by Ptolemy, and represents a stringed musical instrument widely used in Greek classical times. Apparently, the young god Hermes (Mercury) created the lyre from the body of a large tortoise shell covered with animal hide sporting antelope horns. The instrument is associated with the virtues of moderation and equilibrium, and was given by Hermes to his half - brother Apollo, who in turn gave it to his son Orpheus. Lyra is a small constellation, but rather obvious to the eye. Its principal star, Vega, is the second brightest star in the northern hemisphere and is also interesting because it is seen almost pole - on and is one of the most rapidly rotating stars known, so it could see it from a different direction it would appear distinctly flattened. Because of precession, Vega is destined to be the Pole Star in about 12,000 years. Entirely unco

Constellation of Lyra - Constellation of Lyra - Constellation of Lyra with bright star Vega. Lyra, The Lyre is one of the 48 constellations listed by Ptolemy, and represents a stringed musical instrument widely used in Greek classical times. Apparently, the young god Hermes (Mercury) created the lyre from the body of a large tortoise shell covered with animal hide sporting antelope horns. The instrument is associated with the virtues of moderation and equilibrium, and was given by Hermes to his half - brother Apollo, who in turn gave it to his son Orpheus. Lyra is a small constellation, but rather obvious to the eye. Its principal star, Vega, is the second brightest star in the northern hemisphere and is also interesting because it is seen almost pole - on and is one of the most rapidly rotating stars known, so it could see it from a different direction it would appear distinctly flattened. Because of precession, Vega is destined to be the Pole Star in about 12,000 years. Entirely unco

PIX4592263

Telescope E - ELT - Artist's view - European Extremely Large Telescope - Artwork - Artist's view of the E - ELT (European Extremely Large Telescope), a telescope project measuring 40 metres in diameter. Its main mirror will consist of 906 hexagonal mirrors assembled together, and its total surface will be equal to that of a football field. A new architectural concept drawing of Eso's planned European Extremely Large Telescope (E - ELT) shows the telescope at work, with its dome open and its record - setting 40 - metre - class primary mirror pointed to the sky. In this illustration, clouds float over the valley overlooked by the E - Elt's summit. The comparatively tiny pickup truck parked at the base of the E - ELT helps to give a sense of the scale of this massive telescope. The E - ELT dome will be similar in size to a football stadium, with a diameter at its base of over 100 m and a height of over 80 m. Scheduled to begin operations early in the next decade, the E - ELT will help tra

Telescope E - ELT - Artist's view - European Extremely Large Telescope - Artwork - Artist's view of the E - ELT (European Extremely Large Telescope), a telescope project measuring 40 metres in diameter. Its main mirror will consist of 906 hexagonal mirrors assembled together, and its total surface will be equal to that of a football field. A new architectural concept drawing of Eso's planned European Extremely Large Telescope (E - ELT) shows the telescope at work, with its dome open and its record - setting 40 - metre - class primary mirror pointed to the sky. In this illustration, clouds float over the valley overlooked by the E - Elt's summit. The comparatively tiny pickup truck parked at the base of the E - ELT helps to give a sense of the scale of this massive telescope. The E - ELT dome will be similar in size to a football stadium, with a diameter at its base of over 100 m and a height of over 80 m. Scheduled to begin operations early in the next decade, the E - ELT will help tra

PIX4653092

Uranus - Illustration - The planet Uranus and its system of rings. This image suggests how Uranus might look from a position in space several hundred thousand miles above its south pole. Like Saturn and Jupiter, Uranus is a Gas Giant, composed primarily of hydrogen and helium gases surrounding a relatively small, dense core of molten rock and metal. Its bluish color is due to the presence of methane in its upper atmosphere. Also like Saturn and Jupiter, Uranus has rings. However Uranus' rings are over three orders of magnitude dimmer than Saturn's; where Saturn's rings are almost white, Uranus' rings are more like the color of charcoal. Uranus 'rings are so dim that they went undetected from 1781, when the English astronomer William Herschel first observed Uranus through a telescope, until 1977 when astronomers watched as a star passing behind Uranus appeared to blink several times, caused by the ten rings surrounding the planet. One bizarre aspect of Uranus is that its axis of rotatio

Uranus - Illustration - The planet Uranus and its system of rings. This image suggests how Uranus might look from a position in space several hundred thousand miles above its south pole. Like Saturn and Jupiter, Uranus is a Gas Giant, composed primarily of hydrogen and helium gases surrounding a relatively small, dense core of molten rock and metal. Its bluish color is due to the presence of methane in its upper atmosphere. Also like Saturn and Jupiter, Uranus has rings. However Uranus' rings are over three orders of magnitude dimmer than Saturn's; where Saturn's rings are almost white, Uranus' rings are more like the color of charcoal. Uranus 'rings are so dim that they went undetected from 1781, when the English astronomer William Herschel first observed Uranus through a telescope, until 1977 when astronomers watched as a star passing behind Uranus appeared to blink several times, caused by the ten rings surrounding the planet. One bizarre aspect of Uranus is that its axis of rotatio

Walter B Myers

PIX4634800

Telescope E - ELT - Artist's view - European Extremely Large Telescope - Artwork - Artist's view of the E - ELT (European Extremely Large Telescope), a telescope project measuring 40 metres in diameter. Its main mirror will consist of 906 hexagonal mirrors assembled together, and its total surface will be equal to that of a football field. A new architectural concept drawing of Eso's planned European Extremely Large Telescope (E - ELT) shows the telescope at work, with its dome open and its record - setting 40 - metre - class primary mirror pointed to the sky. In this illustration, clouds float over the valley overlooked by the E - Elt's summit. The comparatively tiny pickup truck parked at the base of the E - ELT helps to give a sense of the scale of this massive telescope. The E - ELT dome will be similar in size to a football stadium, with a diameter at its base of over 100 m and a height of over 80 m. Scheduled to begin operations early in the next decade, the E - ELT will help tra

Telescope E - ELT - Artist's view - European Extremely Large Telescope - Artwork - Artist's view of the E - ELT (European Extremely Large Telescope), a telescope project measuring 40 metres in diameter. Its main mirror will consist of 906 hexagonal mirrors assembled together, and its total surface will be equal to that of a football field. A new architectural concept drawing of Eso's planned European Extremely Large Telescope (E - ELT) shows the telescope at work, with its dome open and its record - setting 40 - metre - class primary mirror pointed to the sky. In this illustration, clouds float over the valley overlooked by the E - Elt's summit. The comparatively tiny pickup truck parked at the base of the E - ELT helps to give a sense of the scale of this massive telescope. The E - ELT dome will be similar in size to a football stadium, with a diameter at its base of over 100 m and a height of over 80 m. Scheduled to begin operations early in the next decade, the E - ELT will help tra

PIX4653098

Phobos and Mars - Illustration - Phobos and Mars - Illustration - Artist's view of Phobos, the largest of Mars's two satellites. This is how Mars and its tiny satellite Phobos might appear from a distance of about 100 miles from Phobos' surface. Phobos is over the low martian plains of Syrtis Major. Below the plains extending down to Mars' terminator and beyond is the heavily cratered Terra Sabaea. Clouds of water - ice crystals are forming at the terminator between light and dark. Looking more like a common potato than a celestial body, Phobos is actually the larger of Mars' two satellites, with a length of about 16 miles and about 11 miles across its smallest dimension. Phobos does not have enough mass for gravity to pull it into a uniform sphere like the larger satellites and planets in the Solar System. Phobos may be an asteroid long ago captured by Mars' gravity, orbiting a mere 5,800 miles above Mars' surface, making it the closest satellite to its host planet in the Solar System

Phobos and Mars - Illustration - Phobos and Mars - Illustration - Artist's view of Phobos, the largest of Mars's two satellites. This is how Mars and its tiny satellite Phobos might appear from a distance of about 100 miles from Phobos' surface. Phobos is over the low martian plains of Syrtis Major. Below the plains extending down to Mars' terminator and beyond is the heavily cratered Terra Sabaea. Clouds of water - ice crystals are forming at the terminator between light and dark. Looking more like a common potato than a celestial body, Phobos is actually the larger of Mars' two satellites, with a length of about 16 miles and about 11 miles across its smallest dimension. Phobos does not have enough mass for gravity to pull it into a uniform sphere like the larger satellites and planets in the Solar System. Phobos may be an asteroid long ago captured by Mars' gravity, orbiting a mere 5,800 miles above Mars' surface, making it the closest satellite to its host planet in the Solar System

Walter B Myers

PIX4616778

Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 450 years - light from Earth. Image obtained by a 50 cm telescope, 42 poses of 15 minutes accumulated. Located in the constellation of Aquarius, the Helix is our closest planetary nebula at only 450 light years distance. It is so close that it can be telescopically seen shifting one side to the other in front of the more distant background stars as the earth moves around the sun - a phenomenon called parallax. Parallax measurements are used to trigonometrically deduce distance between an object in space and the earth. A planetary nebula results when a red giant star, near the ends of it's productive life, sheds its outer layers into space and creates a breathtaking shell of surrounding gas that early visual astronomers likened to the disks of planets. This planetary spans approximately 1.5 light years and is still expanding. The name associated with the Helix is derived from the c

Planetary nebula Helix (NGC 7293) in Aquarius - Planetary nebula Helix (NGC 7293) - This nebula is located 450 years - light from Earth. Image obtained by a 50 cm telescope, 42 poses of 15 minutes accumulated. Located in the constellation of Aquarius, the Helix is our closest planetary nebula at only 450 light years distance. It is so close that it can be telescopically seen shifting one side to the other in front of the more distant background stars as the earth moves around the sun - a phenomenon called parallax. Parallax measurements are used to trigonometrically deduce distance between an object in space and the earth. A planetary nebula results when a red giant star, near the ends of it's productive life, sheds its outer layers into space and creates a breathtaking shell of surrounding gas that early visual astronomers likened to the disks of planets. This planetary spans approximately 1.5 light years and is still expanding. The name associated with the Helix is derived from the c

R. Jay GaBany

PIX4623639

Nebula NGC 7023 in Cephee - NGC 7023 (The Iris Nebula) in Cepheus - The Iris Nebula (NGC 7023) is a reflexion nebula illuminated by the massive star HD 200775. The bright star HD 200775 shining through the nebula NGC 7023 is a 10 solar mass star centrally imbedded in a region surrounded by ambient molecular cloud material. Suns are born from vast clouds of dust and gas that gather in the dark places between the stars. Gravity causes these interstellar vapors to collapse inward until the pressure causes high enough temperatures at its center to fuse hydrogen, the university's basic building block, into helium - an event that also releases gamma - ray photons. These photons can take a million years to travel outward through the overlying matter until they reach the surface and escape into space as visible light. The push of the photon's rush to make an exit also stops the cloud's collapse and thus what began as thin gas and dust becomes a brilliant star illuminating the heavens and possi

Nebula NGC 7023 in Cephee - NGC 7023 (The Iris Nebula) in Cepheus - The Iris Nebula (NGC 7023) is a reflexion nebula illuminated by the massive star HD 200775. The bright star HD 200775 shining through the nebula NGC 7023 is a 10 solar mass star centrally imbedded in a region surrounded by ambient molecular cloud material. Suns are born from vast clouds of dust and gas that gather in the dark places between the stars. Gravity causes these interstellar vapors to collapse inward until the pressure causes high enough temperatures at its center to fuse hydrogen, the university's basic building block, into helium - an event that also releases gamma - ray photons. These photons can take a million years to travel outward through the overlying matter until they reach the surface and escape into space as visible light. The push of the photon's rush to make an exit also stops the cloud's collapse and thus what began as thin gas and dust becomes a brilliant star illuminating the heavens and possi

Adam Block

PIX4620555

Saturn en jour vue par Cassini - Backlit Saturn seen by Cassini - Mosaic of 141 photos obtained by the Cassini probe on 19 July 2013 at a distance of 1.2 million km from the planet. The Cassini probe was then in the shadow of the Planet Saturn; this portrait of the Giant Planet highlights its ring system and seven of its satellites appear in the image. The planets Mars, Venus and Earth are also visible. On July 19, 2013, Nasa's Cassini spacecraft slipped into Saturn's shadow and turned to image the planet, seven of its moons, its inner rings - and, in the background, our home planet, Earth. With both Cassini's wide-angle and narrow-angle cameras aimed at Saturn, Cassini was able to capture 323 images in just over four hours. This final mosaic uses 141 of those wide-angle images. Images taken using the red, green and blue spectral filters of the wide-angle camera were combined and mosaicked together to create this natural-color view. This image spans about 404,880 miles (651,591 kilomet

Saturn en jour vue par Cassini - Backlit Saturn seen by Cassini - Mosaic of 141 photos obtained by the Cassini probe on 19 July 2013 at a distance of 1.2 million km from the planet. The Cassini probe was then in the shadow of the Planet Saturn; this portrait of the Giant Planet highlights its ring system and seven of its satellites appear in the image. The planets Mars, Venus and Earth are also visible. On July 19, 2013, Nasa's Cassini spacecraft slipped into Saturn's shadow and turned to image the planet, seven of its moons, its inner rings - and, in the background, our home planet, Earth. With both Cassini's wide-angle and narrow-angle cameras aimed at Saturn, Cassini was able to capture 323 images in just over four hours. This final mosaic uses 141 of those wide-angle images. Images taken using the red, green and blue spectral filters of the wide-angle camera were combined and mosaicked together to create this natural-color view. This image spans about 404,880 miles (651,591 kilomet

PIX4625315

Engraving depicting a total solar eclipse in 1871. Dated 19th Century

Engraving depicting a total solar eclipse in 1871. Dated 19th Century

UIG5426145

Engraving depicting observations at the beginning of the 18th Century

Engraving depicting observations at the beginning of the 18th Century

UIG5426098

Engraving depicting the Craig telescope, a large telescope built in the 1850s, and while much larger than previous refracting telescopes. Dated 19th Century

Engraving depicting the Craig telescope, a large telescope built in the 1850s, and while much larger than previous refracting telescopes. Dated 19th Century

UIG5426150

James Webb Space Telescope (JWST) - JWST in clean room: Curvature measurements of the JWST Space Telescope (James Webb Space Telescope) at Nasa's Goddard Space Center. The JWST will replace the Hubble Space Telescope in 2018. Equipped with a 6.5 m mirror, he will observe the universe mainly in infrared. The primary mirror of Nasa's James Webb Space Telescope consisting of 18 hexagonal mirrors looks like a giant puzzle piece standing in the massive clean room of Nasa's Goddard Space Flight Center in Greenbelt, Maryland. Appropriately, combined with the rest of the observatory, the mirrors will help piece together puzzles scientists have been trying to solve throughout the cosmos. Webb's primary mirror will collect light for the observatory in the scientific quest to better understand our solar system and beyond. Using these mirrors and Webb's infrared vision scientists will peer back over 13.5 billion years to see the first stars and galaxies forming out of the darkness of the early uni

James Webb Space Telescope (JWST) - JWST in clean room: Curvature measurements of the JWST Space Telescope (James Webb Space Telescope) at Nasa's Goddard Space Center. The JWST will replace the Hubble Space Telescope in 2018. Equipped with a 6.5 m mirror, he will observe the universe mainly in infrared. The primary mirror of Nasa's James Webb Space Telescope consisting of 18 hexagonal mirrors looks like a giant puzzle piece standing in the massive clean room of Nasa's Goddard Space Flight Center in Greenbelt, Maryland. Appropriately, combined with the rest of the observatory, the mirrors will help piece together puzzles scientists have been trying to solve throughout the cosmos. Webb's primary mirror will collect light for the observatory in the scientific quest to better understand our solar system and beyond. Using these mirrors and Webb's infrared vision scientists will peer back over 13.5 billion years to see the first stars and galaxies forming out of the darkness of the early uni

PIX4645815

Star Vega in the Lyre - Star Vega in infrared - Vega (Alpha Lyrae) is the main star of the constellation Lyra, located only 25.4 light years from the Sun. It is the second brightest star after Sirius in the northern hemisphere. It's seen here in infrared by the Spitzer space telescope. Observed in this wavelength, the dust cloud surrounding the star appears. Nasa's Spitzer Space Telescope captured these images of the star Vega, located 25 light years away in the constellation Lyra. Spitzer was able to detect the heat radiation from the cloud of dust around the star and found that the debris disk is much larger than previously thought. This side - by - side comparison, taken by Spitzer's multiband imaging photometer, shows the warm infrared glows from dust particles orbiting the star at wavelengths of 24 microns (on the left in blue) and 70 microns (on the right in red). Both images show a very large, circular and smooth debris disk. The disk radius extends to at least 815 astronomical

Star Vega in the Lyre - Star Vega in infrared - Vega (Alpha Lyrae) is the main star of the constellation Lyra, located only 25.4 light years from the Sun. It is the second brightest star after Sirius in the northern hemisphere. It's seen here in infrared by the Spitzer space telescope. Observed in this wavelength, the dust cloud surrounding the star appears. Nasa's Spitzer Space Telescope captured these images of the star Vega, located 25 light years away in the constellation Lyra. Spitzer was able to detect the heat radiation from the cloud of dust around the star and found that the debris disk is much larger than previously thought. This side - by - side comparison, taken by Spitzer's multiband imaging photometer, shows the warm infrared glows from dust particles orbiting the star at wavelengths of 24 microns (on the left in blue) and 70 microns (on the right in red). Both images show a very large, circular and smooth debris disk. The disk radius extends to at least 815 astronomical

PIX4571758

Engraving depicting a transit instrument, used for finding celestial bodies crossing the meridian, within an observatory. Dated 19th Century ©UIG/Leemage

Engraving depicting a transit instrument, used for finding celestial bodies crossing the meridian, within an observatory. Dated 19th Century ©UIG/Leemage

UIG5426384

Engraving depicting a transit instrument, used for finding celestial bodies crossing the meridian, within an observatory. Dated 19th Century ©UIG/Leemage

Engraving depicting a transit instrument, used for finding celestial bodies crossing the meridian, within an observatory. Dated 19th Century ©UIG/Leemage

UIG5426385

Earthrise and Moon seen since LRO. 10/2015 - Earthrise and Moon as seen from LRO. 10/2015 - Earthrise above the Moon seen from Lunar Reconnaissance Orbiter (LRO). Composite of images obtained on October 12, 2015. Nasa's Lunar Reconnaissance Orbiter (LRO) captured a unique view of Earth from the spacecraft's vantage point in orbit around the moon. In this composite image we see Earth appear to rise over the lunar horizon from the viewpoint of the spacecraft, with the center of the Earth just off the coast of Liberia (at 4.04 degrees North, 12.44 degrees West). The large tan area in the upper right is the Sahara Desert, and just beyond is Saudi Arabia. The Atlantic and Pacific coasts of South America are visible to the left. On the moon, we get a glimpse of the crater Compton, which is located just beyond the eastern limb of the moon, on the lunar farside. LRO was launched on June 18, 2009, and has collected a treasure trove of data with its seven powerful instruments, making an invaluab

Earthrise and Moon seen since LRO. 10/2015 - Earthrise and Moon as seen from LRO. 10/2015 - Earthrise above the Moon seen from Lunar Reconnaissance Orbiter (LRO). Composite of images obtained on October 12, 2015. Nasa's Lunar Reconnaissance Orbiter (LRO) captured a unique view of Earth from the spacecraft's vantage point in orbit around the moon. In this composite image we see Earth appear to rise over the lunar horizon from the viewpoint of the spacecraft, with the center of the Earth just off the coast of Liberia (at 4.04 degrees North, 12.44 degrees West). The large tan area in the upper right is the Sahara Desert, and just beyond is Saudi Arabia. The Atlantic and Pacific coasts of South America are visible to the left. On the moon, we get a glimpse of the crater Compton, which is located just beyond the eastern limb of the moon, on the lunar farside. LRO was launched on June 18, 2009, and has collected a treasure trove of data with its seven powerful instruments, making an invaluab

PIX4577425

Asteroid belts around the star Epsilon Eridani - Asteroid belts around Epsilon Eridani - Artist's view of the planetary system around the star Epsilon Eridani. This star is located 10 years from Earth. Observations made by the Spitzer space telescope in 2008 show that this system has two asteroid belts. An exoplanet had already been discovered around this star in 2000. This artist's conception shows the closest known planetary system to our own, called Epsilon Eridani. Observations from Nasa's Spitzer Space Telescope show that the system hosts two asteroid belts, in addition to previously identified candidate planets and an outer comet ring. Epsilon Eridani is located about 10 light - years away in the constellation Eridani. It is visible in the night skies with the naked eye. The system's inner asteroid belt appears as the yellowish ring around the star, while the outer asteroid belt is in the foreground. The outermost comet ring is too far out to be seen in this view, but comets orig

Asteroid belts around the star Epsilon Eridani - Asteroid belts around Epsilon Eridani - Artist's view of the planetary system around the star Epsilon Eridani. This star is located 10 years from Earth. Observations made by the Spitzer space telescope in 2008 show that this system has two asteroid belts. An exoplanet had already been discovered around this star in 2000. This artist's conception shows the closest known planetary system to our own, called Epsilon Eridani. Observations from Nasa's Spitzer Space Telescope show that the system hosts two asteroid belts, in addition to previously identified candidate planets and an outer comet ring. Epsilon Eridani is located about 10 light - years away in the constellation Eridani. It is visible in the night skies with the naked eye. The system's inner asteroid belt appears as the yellowish ring around the star, while the outer asteroid belt is in the foreground. The outermost comet ring is too far out to be seen in this view, but comets orig

PIX4573221

Orion nebula centre - Trapeze - Orion nebula center - Mosaic of images obtained by the space telescope in 1994 and 1995 showing the center of Orion nebula, the region around the Trapeze, a cluster of 4 very young and massive stars that make this nebula shine. The picture shows a churning turbulent star factory set within a maelstrom of flowing, luminescent gas. Although this 2.5 light - years wide view is still a small portion of the entire Orion nebula, it includes almost all of the light from the bright glowing clouds of gas and a star cluster associated with the nebula. Hubble reveals details as small as 4.1 billion miles across. Hubble Space Telescope observing time was devoted to making this panorama because the nebula is a vast laboratory for studying the processes which gave birth to our own Sun and solar system 4.5 billion years ago. Gas are illuminated and heated by a torrent of energetic ultraviolet light from its four hottest and most massive stars, called the Trapezium, whi

Orion nebula centre - Trapeze - Orion nebula center - Mosaic of images obtained by the space telescope in 1994 and 1995 showing the center of Orion nebula, the region around the Trapeze, a cluster of 4 very young and massive stars that make this nebula shine. The picture shows a churning turbulent star factory set within a maelstrom of flowing, luminescent gas. Although this 2.5 light - years wide view is still a small portion of the entire Orion nebula, it includes almost all of the light from the bright glowing clouds of gas and a star cluster associated with the nebula. Hubble reveals details as small as 4.1 billion miles across. Hubble Space Telescope observing time was devoted to making this panorama because the nebula is a vast laboratory for studying the processes which gave birth to our own Sun and solar system 4.5 billion years ago. Gas are illuminated and heated by a torrent of energetic ultraviolet light from its four hottest and most massive stars, called the Trapezium, whi

PIX4617855

Engraving depicting a meridian circle, used to determine altitude of celestial bodies, and a transit instrument, used for finding the celestial bodies crossing the meridian. Dated 19th Century ©UIG/Leemage

Engraving depicting a meridian circle, used to determine altitude of celestial bodies, and a transit instrument, used for finding the celestial bodies crossing the meridian. Dated 19th Century ©UIG/Leemage

UIG5426386

Engraving depicting the interior of the Kuffner Observatory, is one of two telescope-equipped public astronomical observatories situated in Austria's capital, Vienna. Dated 19th Century

Engraving depicting the interior of the Kuffner Observatory, is one of two telescope-equipped public astronomical observatories situated in Austria's capital, Vienna. Dated 19th Century

UIG5426129

Planetary nebula NGC 6543 dans le Dragon/HST - The nebula, formally cataloged NGC 6543 was one of the first planetary nebulae to be discovered; it is one of the most complex such nebulae seen in space. A planetary nebula forms when Sun - like stars gently eject their outer gaseous layers that form bright nebulae with amazing and confounding shapes. In 1994, Hubble first revealed NGC 6543's surprisingly intricate structures, including concentric gas shells, jets of high - speed gas, and unusual shock - induced knots of gas. As if the Cat's Eye itself isn't spectacular enough, this new image taken with Hubble's Advanced Camera for Surveys (ACS) reveals the full beauty of a bull's eye pattern of eleven or even more concentric rings, or shells, around the Cat's Eye. Each 'ring' is actually the edge of a spherical bubble seen projected onto the sky - - that's why it appears bright along its outer edge. Observations suggest the star ejected its mass in a series of pulses at 1,500 - year inte

Planetary nebula NGC 6543 dans le Dragon/HST - The nebula, formally cataloged NGC 6543 was one of the first planetary nebulae to be discovered; it is one of the most complex such nebulae seen in space. A planetary nebula forms when Sun - like stars gently eject their outer gaseous layers that form bright nebulae with amazing and confounding shapes. In 1994, Hubble first revealed NGC 6543's surprisingly intricate structures, including concentric gas shells, jets of high - speed gas, and unusual shock - induced knots of gas. As if the Cat's Eye itself isn't spectacular enough, this new image taken with Hubble's Advanced Camera for Surveys (ACS) reveals the full beauty of a bull's eye pattern of eleven or even more concentric rings, or shells, around the Cat's Eye. Each 'ring' is actually the edge of a spherical bubble seen projected onto the sky - - that's why it appears bright along its outer edge. Observations suggest the star ejected its mass in a series of pulses at 1,500 - year inte

PIX4623222

Remains of Supernova N49 dans la Dorade/HST - Resembling the puffs of smoke and sparks from a summer fireworks display in this image from Nasa's Hubble Space Telescope, these delicate filaments are actually sheets of debris from a stellar explosion in a neighboring galaxy. Hubble's target was a supernova remnant within the Large Magellanic Cloud (LMC), a nearby, small companion galaxy to the Milky Way visible from the southern hemisphere. Denoted N 49, or DEM L 190, this remnant is from a massive star that died in a supernova blast whose light would have reached Earth thousands of years ago. This filamentary material will eventually be recycled into building new generations of stars in the LMC. Our own Sun and planets are constructed from similar debris of supernovae that exploded in the Milky Way billions of years ago. This seemingly gentle structure also harbors a very powerful spinning neutron star that may be the central remnant from the initial blast. It is quite common for the co

Remains of Supernova N49 dans la Dorade/HST - Resembling the puffs of smoke and sparks from a summer fireworks display in this image from Nasa's Hubble Space Telescope, these delicate filaments are actually sheets of debris from a stellar explosion in a neighboring galaxy. Hubble's target was a supernova remnant within the Large Magellanic Cloud (LMC), a nearby, small companion galaxy to the Milky Way visible from the southern hemisphere. Denoted N 49, or DEM L 190, this remnant is from a massive star that died in a supernova blast whose light would have reached Earth thousands of years ago. This filamentary material will eventually be recycled into building new generations of stars in the LMC. Our own Sun and planets are constructed from similar debris of supernovae that exploded in the Milky Way billions of years ago. This seemingly gentle structure also harbors a very powerful spinning neutron star that may be the central remnant from the initial blast. It is quite common for the co

PIX4582891

Engraving depicting Johannes Hevelius's observatory at Gansk. Johannes Hevelius (1611-1687) a Polish astronomer, councillor and mayor of Danzig. Dated 17th Century

Engraving depicting Johannes Hevelius's observatory at Gansk. Johannes Hevelius (1611-1687) a Polish astronomer, councillor and mayor of Danzig. Dated 17th Century

UIG5426120

Gl 581c: discovery of a habitable planet - Gl 581c: discovery of an habitable planet - Artist's view of the exoplanet Gliese 581c. Gliese 581c, with a radius of 1.5 times that of the Earth, is the first exoplanet gathering the necessary elements to imagine the existence of a possible extra-terrestrial life. From its surface, its star, about 100 times less bright than our Sun, must be large in the sky because of its proximity to the planet. In April 2007 the Geneva Observatory in Switzerland announced the discovery of a “super - earth”” extrasolar planet orbiting the red dwarf star Gliese 581. Dubbed Gliese 581 c, it's been called a super - earth because it is one of the few known extrasolar planets that has a mass near Earth's, and the only one to occupy its sun's “” habitable zone.”” Gliese 581 c is believed to be about five times more massive than the Earth with a diameter about half - again as large as Earth's. Depending upon the planet's composition, whether mostly rock or a combin

Gl 581c: discovery of a habitable planet - Gl 581c: discovery of an habitable planet - Artist's view of the exoplanet Gliese 581c. Gliese 581c, with a radius of 1.5 times that of the Earth, is the first exoplanet gathering the necessary elements to imagine the existence of a possible extra-terrestrial life. From its surface, its star, about 100 times less bright than our Sun, must be large in the sky because of its proximity to the planet. In April 2007 the Geneva Observatory in Switzerland announced the discovery of a “super - earth”” extrasolar planet orbiting the red dwarf star Gliese 581. Dubbed Gliese 581 c, it's been called a super - earth because it is one of the few known extrasolar planets that has a mass near Earth's, and the only one to occupy its sun's “” habitable zone.”” Gliese 581 c is believed to be about five times more massive than the Earth with a diameter about half - again as large as Earth's. Depending upon the planet's composition, whether mostly rock or a combin

Walter B Myers

PIX4573770

Engraving depicting the Osservatorio astronomico di Norimberga. Dated 18th Century

Engraving depicting the Osservatorio astronomico di Norimberga. Dated 18th Century

UIG5426097

Engraving depicting the Rundetaarn, a 17th-century tower located in central Copenhagen, Denmark. One of the many architectural projects of Christian IV, it was built as an astronomical observatory. Dated 19th Century

Engraving depicting the Rundetaarn, a 17th-century tower located in central Copenhagen, Denmark. One of the many architectural projects of Christian IV, it was built as an astronomical observatory. Dated 19th Century

UIG5426093

Engraving depicting Ole R¿mer's use of the eclipses of Jupiter's satellites to measure the speed of light. Ole R¿mer (1644-1710) a Danish astronomer. Dated 18th Century ©UIG/Leemage

Engraving depicting Ole R¿mer's use of the eclipses of Jupiter's satellites to measure the speed of light. Ole R¿mer (1644-1710) a Danish astronomer. Dated 18th Century ©UIG/Leemage

UIG5425818

Engraving depicting Tycho Brahe's Observatory in Uraniborg, a school in Sweden. Tycho Brahe (1546-1601) a Danish nobleman. Dated 17th Century

Engraving depicting Tycho Brahe's Observatory in Uraniborg, a school in Sweden. Tycho Brahe (1546-1601) a Danish nobleman. Dated 17th Century

UIG5426109

Diagram depicting Tycho Brahe's planetary system. Dated 16th Century ©UIG/Leemage

Diagram depicting Tycho Brahe's planetary system. Dated 16th Century ©UIG/Leemage

UIG5426203

Engraving depicting the Cambridge University Observatory. Dated 19th Century

Engraving depicting the Cambridge University Observatory. Dated 19th Century

UIG5426096

Engraving depicting Tycho Brahe's Observatory in Uraniborg, a school in Sweden. Tycho Brahe (1546-1601) a Danish nobleman. Dated 17th Century

Engraving depicting Tycho Brahe's Observatory in Uraniborg, a school in Sweden. Tycho Brahe (1546-1601) a Danish nobleman. Dated 17th Century

UIG5426124

Diagram depicting Tycho Brahe's planetary system showing at X the comet of 1577. Dated 16th Century ©UIG/Leemage

Diagram depicting Tycho Brahe's planetary system showing at X the comet of 1577. Dated 16th Century ©UIG/Leemage

UIG5426204

Engraving depicting the exterior of the Radcliffe Observatory, the astronomical observatory of the University of Oxford from 1773 until 1934. Dated 18th Century

Engraving depicting the exterior of the Radcliffe Observatory, the astronomical observatory of the University of Oxford from 1773 until 1934. Dated 18th Century

UIG5426117

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