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Barree spiral galaxy NGC 4639 in Virgo - Barred galaxy NGC 4639 in Virgo - The barree spiral galaxy NGC 4639 is located 78 million years - light in the Virgin's galaxy cluster. The blue dots visible on this image obtained by the Hubble Space Telescope are young stars. Other stars, cepheides have also been observed in this galaxy, allowing us to measure their distance with precision. This Hubble Space Telescope image shows NGC 4639, a spiral galaxy located 78 million light - years away in the Virgo cluster of galaxies. The blue dots in the galaxy's outlying regions indicate the presence of young stars. Among them are older, bright stars called Cepheids, which are used as reliable milepost markers to obtain accurate distances to nearby galaxies. Astronomers measure the brightness of Cepheids to calculate the distance to a galaxy. After using Cepheids to calculate the distance to NGC 4639, the team compared the results to the peak brightness measurements of SN 1990N, a type Ia supernova l

Barree spiral galaxy NGC 4639 in Virgo - Barred galaxy NGC 4639 in Virgo - The barree spiral galaxy NGC 4639 is located 78 million years - light in the Virgin's galaxy cluster. The blue dots visible on this image obtained by the Hubble Space Telescope are young stars. Other stars, cepheides have also been observed in this galaxy, allowing us to measure their distance with precision. This Hubble Space Telescope image shows NGC 4639, a spiral galaxy located 78 million light - years away in the Virgo cluster of galaxies. The blue dots in the galaxy's outlying regions indicate the presence of young stars. Among them are older, bright stars called Cepheids, which are used as reliable milepost markers to obtain accurate distances to nearby galaxies. Astronomers measure the brightness of Cepheids to calculate the distance to a galaxy. After using Cepheids to calculate the distance to NGC 4639, the team compared the results to the peak brightness measurements of SN 1990N, a type Ia supernova l

PIX4611731

Eagle Nebula (IC 4703) and M16 star cluster in the Snake - The Eagle nebula in Serpens - The M16 star cluster is a cluster of young stars distant from 7000 years - light, formed about 2 million years ago in the Eagle nebula, IC 4703. These stars are much warmer than the Sun and can be 30 times more massive. Messier 16 is a cluster of young stars which formed about 2 million years ago from the gas and dust which still surrounds them. Brilliant blue stars of this type are much hotter than the Sun and can be up to thirty times more massive. The dark intrusions visible across the face of the nebula are condensations of dusty material which might one day collapse into yet more stars, should they survive the radiation from the bright stars, which is gradually etching them away. Bright red regions of photo - ionised hydrogen such as M16 are usually found in the spiral arms of galaxies and are often associated recent star formation. This example is about 7000 light years distant

Eagle Nebula (IC 4703) and M16 star cluster in the Snake - The Eagle nebula in Serpens - The M16 star cluster is a cluster of young stars distant from 7000 years - light, formed about 2 million years ago in the Eagle nebula, IC 4703. These stars are much warmer than the Sun and can be 30 times more massive. Messier 16 is a cluster of young stars which formed about 2 million years ago from the gas and dust which still surrounds them. Brilliant blue stars of this type are much hotter than the Sun and can be up to thirty times more massive. The dark intrusions visible across the face of the nebula are condensations of dusty material which might one day collapse into yet more stars, should they survive the radiation from the bright stars, which is gradually etching them away. Bright red regions of photo - ionised hydrogen such as M16 are usually found in the spiral arms of galaxies and are often associated recent star formation. This example is about 7000 light years distant

R. Gendler

PIX4620019

Benelux Countries, True Colour Satellite Image With Mask. Benelux region. Satellite image of the Benelux region of Europe - with mask . North is at top. Water is blue, vegetation is green, urban areas are grey and the shallow coastal waters are light blue. The area here is about 550 by 400 kilometres. It includes the countries of Belgium, the Netherlands and Luxembourg (collectively called Benelux). Parts of Germany (down right) and France (lower left) are also seen. The Netherlands is at upper right; the barrier islands and dikes protect the low-lying coastline from the North Sea. Belgium is at centre, and Luxembourg is at lower right ©Planet Observer/UIG/Leemage

Benelux Countries, True Colour Satellite Image With Mask. Benelux region. Satellite image of the Benelux region of Europe - with mask . North is at top. Water is blue, vegetation is green, urban areas are grey and the shallow coastal waters are light blue. The area here is about 550 by 400 kilometres. It includes the countries of Belgium, the Netherlands and Luxembourg (collectively called Benelux). Parts of Germany (down right) and France (lower left) are also seen. The Netherlands is at upper right; the barrier islands and dikes protect the low-lying coastline from the North Sea. Belgium is at centre, and Luxembourg is at lower right ©Planet Observer/UIG/Leemage

UIG5420979

Cover of 'Les Onze mille verges ou les amours d’un Hospodar' by Guillaume Apollinaire, 1907 (colour litho)

Cover of 'Les Onze mille verges ou les amours d’un Hospodar' by Guillaume Apollinaire, 1907 (colour litho)

French School, (20th century)

CH2908914

An Unknown Woman, wrongly known as 'The Widow', but probably Anne Conyngham, Mrs David Butle or Elizabeth Conyngham, Lady Staples (d.1681)

An Unknown Woman, wrongly known as 'The Widow', but probably Anne Conyngham, Mrs David Butle or Elizabeth Conyngham, Lady Staples (d.1681)

English School, (17th century)

USB1158493

Sir Frederick Gowland Hopkins (1861-1947), 1938

Sir Frederick Gowland Hopkins (1861-1947), 1938

Frampton, Meredith (1894-1984)

PHD55188

Nebulae NGC 1973 - 1975 - 1977 in Orion - The reflection nebulae NGC 1973 - 75 - 77 in Orion - Reflection nebulae located just north of the Great Orion Nebula. This group of nebulous stars is just half a degree north of the much brighter Orion Nebula and has largely been ignored because of it. The group of stars here appear as a single star to the unaided eye, the northernmost 'star' in the sword of Orion. Most of the blue nebulosity is starlight scattered by dust, while some of the stars are sufficiently hot to excite the wisps of hydrogen that linger here and create a distinctive red glow. To the south of the nebula (at the bottom of the picture) faint traces of the yellow reflected light of the Orion nebula can just be detected

Nebulae NGC 1973 - 1975 - 1977 in Orion - The reflection nebulae NGC 1973 - 75 - 77 in Orion - Reflection nebulae located just north of the Great Orion Nebula. This group of nebulous stars is just half a degree north of the much brighter Orion Nebula and has largely been ignored because of it. The group of stars here appear as a single star to the unaided eye, the northernmost 'star' in the sword of Orion. Most of the blue nebulosity is starlight scattered by dust, while some of the stars are sufficiently hot to excite the wisps of hydrogen that linger here and create a distinctive red glow. To the south of the nebula (at the bottom of the picture) faint traces of the yellow reflected light of the Orion nebula can just be detected

PIX4618046

Sinai Peninsula seen by the shuttle Atlantis - Sinai Peninsula seen from space - The Sinai Peninsula seen by the shuttle Atlantis in October 2002. The Suez Canal is visible at the bottom right of the image. Egypt's triangular Sinai Peninsula lies in the center of this view, photographed from the Space Shuttle Atlantis, with the dark greens of the Nile delta lower right. In this southwesterly view, the Red Sea, with its characteristic parallel coastlines, stretches toward the top. At the bottom of the image, the Suez Canal appears as an irregular line joining the Red Sea to the Mediterranean Sea (lower left). The Dead Sea in central Israel, with its light blue salt ponds at the south end, appears on the left margin. October 200

Sinai Peninsula seen by the shuttle Atlantis - Sinai Peninsula seen from space - The Sinai Peninsula seen by the shuttle Atlantis in October 2002. The Suez Canal is visible at the bottom right of the image. Egypt's triangular Sinai Peninsula lies in the center of this view, photographed from the Space Shuttle Atlantis, with the dark greens of the Nile delta lower right. In this southwesterly view, the Red Sea, with its characteristic parallel coastlines, stretches toward the top. At the bottom of the image, the Suez Canal appears as an irregular line joining the Red Sea to the Mediterranean Sea (lower left). The Dead Sea in central Israel, with its light blue salt ponds at the south end, appears on the left margin. October 200

PIX4658705

Autochrome of roses in a silver vase on a table, c 1910

Autochrome of roses in a silver vase on a table, c 1910

UIS5072388

Hottest surface temperatures between 2003 and 2005 - Hottest land surface temperatures between 2003 and 2005 - Map obtained from data collected by the Aqua satellite using the MODIS instrument from 2003 to 2005. The scale ranges from 10 degres to 70 degres celsius; the hottest spots appear in white then in light pink, in purple the temperate regions, in blue the coldest regions. According to this report, the warmest temperature recorded between 2004 and 2005 was 70.7 degres in the Lut desert in Iran. In 2003, Australia in Queensland had the warmest temperature at 69.3 degres. This image shows the hottest land surface temperature instrument MODIS on Aqua satellite recorded at each location on Earth between 2003 and 2005. The hottest places, shown in light pink, are barren or sparsely vegetated deserts. These areas dominate northern Africa, southern Asia, Australia, and parts of western North and South America. Densely vegetated areas such as the Amazon and Congo rain forests of South Am

Hottest surface temperatures between 2003 and 2005 - Hottest land surface temperatures between 2003 and 2005 - Map obtained from data collected by the Aqua satellite using the MODIS instrument from 2003 to 2005. The scale ranges from 10 degres to 70 degres celsius; the hottest spots appear in white then in light pink, in purple the temperate regions, in blue the coldest regions. According to this report, the warmest temperature recorded between 2004 and 2005 was 70.7 degres in the Lut desert in Iran. In 2003, Australia in Queensland had the warmest temperature at 69.3 degres. This image shows the hottest land surface temperature instrument MODIS on Aqua satellite recorded at each location on Earth between 2003 and 2005. The hottest places, shown in light pink, are barren or sparsely vegetated deserts. These areas dominate northern Africa, southern Asia, Australia, and parts of western North and South America. Densely vegetated areas such as the Amazon and Congo rain forests of South Am

PIX4632421

Nebula IC 2948 in Centaurus - Nebula IC 2948 and IC 2944 in Centaurus - Nebula IC 2948 is a vast nebula located about 6000 years from Earth in the southern constellation of Centaurus. 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. Image obtained through 3 different filters that highlight oxygen (blue), hydrogen (green), and sulfur (red). Between the Southern Cross and the rich Carina region, on the southern border of Centaurus, is a large, almost featureless emission nebula, IC 2948, with a sprinkling of bright stars, Collinder 249. It is against this uniform, backdrop that we see a brighter region (IC 2944) which hosts small group of dark clouds of the kind known as 'Bok globules'. They are named for the Dutch - American astronomer who first drew attention to them as the possible sites of star formation.

Nebula IC 2948 in Centaurus - Nebula IC 2948 and IC 2944 in Centaurus - Nebula IC 2948 is a vast nebula located about 6000 years from Earth in the southern constellation of Centaurus. 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. Image obtained through 3 different filters that highlight oxygen (blue), hydrogen (green), and sulfur (red). Between the Southern Cross and the rich Carina region, on the southern border of Centaurus, is a large, almost featureless emission nebula, IC 2948, with a sprinkling of bright stars, Collinder 249. It is against this uniform, backdrop that we see a brighter region (IC 2944) which hosts small group of dark clouds of the kind known as 'Bok globules'. They are named for the Dutch - American astronomer who first drew attention to them as the possible sites of star formation.

Tom Davis

PIX4622599

Southern Aurora on the Planet Saturn - Aurora on Saturn - The Planet Saturn accompanied by a Southern Aurora, seen in visible and infrared by the Cassini probe on November 1, 2008. This false - color composite image, constructed from data obtained by Nasa's Cassini spacecraft, shows the glow of auroras streaking out about 1,000 kilometers (600 miles) from the cloud tops of Saturn's south polar region. In this image constructed from data collected in the near - infrared wavelengths of light, the auroral emission is shown in green. Scientists designated blue to indicate sunlight reflected at wavelengths from 2 to 3 microns, green to indicate light from hydrogen ions at wavelengths between 3 and 4 microns and red to indicate thermal emission at 5 microns. Saturn's rings and high altitude haze only reflect sunlight at 3 microns or less, so they appear deep blue. The glow from the aurora can only be seen at the wavelengths in the green channel. The heat emission from the interior of Saturn

Southern Aurora on the Planet Saturn - Aurora on Saturn - The Planet Saturn accompanied by a Southern Aurora, seen in visible and infrared by the Cassini probe on November 1, 2008. This false - color composite image, constructed from data obtained by Nasa's Cassini spacecraft, shows the glow of auroras streaking out about 1,000 kilometers (600 miles) from the cloud tops of Saturn's south polar region. In this image constructed from data collected in the near - infrared wavelengths of light, the auroral emission is shown in green. Scientists designated blue to indicate sunlight reflected at wavelengths from 2 to 3 microns, green to indicate light from hydrogen ions at wavelengths between 3 and 4 microns and red to indicate thermal emission at 5 microns. Saturn's rings and high altitude haze only reflect sunlight at 3 microns or less, so they appear deep blue. The glow from the aurora can only be seen at the wavelengths in the green channel. The heat emission from the interior of Saturn

PIX4625211

Spiral galaxy NGC 4622 in Centaurus - Spiral galaxy NGC 4622 in Centaurus - The spiral galaxy NGC 4622 is located 111 million light years ago in the southern constellation of Centaurus. The image obtained by the Hubble Space Telescope in May 2001 shows regions filled with new stars in blue. Astronomers have observed that, unlike other known spiral galaxies, it is the outer arms of this galaxy that rotate the whole, rotating in the same direction as the center; moreover, an inner arm of the galaxy would rotate in the opposite direction. A small galaxy absorbed by NGC 4622 could be responsible for this anomaly. NGC 4622 resides 111 million light - years away in the constellation Centaurus. The image taken in May 2001 with Hubble's Wide Field Planetary Camera 2 shows NGC 4622 and its outer pair of winding arms full of new stars (shown in blue). Astronomers are puzzled by the clockwise rotation because of the direction the outer spiral arms are pointing. Most spiral galaxies have arms of g

Spiral galaxy NGC 4622 in Centaurus - Spiral galaxy NGC 4622 in Centaurus - The spiral galaxy NGC 4622 is located 111 million light years ago in the southern constellation of Centaurus. The image obtained by the Hubble Space Telescope in May 2001 shows regions filled with new stars in blue. Astronomers have observed that, unlike other known spiral galaxies, it is the outer arms of this galaxy that rotate the whole, rotating in the same direction as the center; moreover, an inner arm of the galaxy would rotate in the opposite direction. A small galaxy absorbed by NGC 4622 could be responsible for this anomaly. NGC 4622 resides 111 million light - years away in the constellation Centaurus. The image taken in May 2001 with Hubble's Wide Field Planetary Camera 2 shows NGC 4622 and its outer pair of winding arms full of new stars (shown in blue). Astronomers are puzzled by the clockwise rotation because of the direction the outer spiral arms are pointing. Most spiral galaxies have arms of g

PIX4611676

Horse's Head Nebula (IC 434) in Orion - Horsehead nebula in Orion - The horse's head nebula, Barnard 33, is a dark nebula located in front of the IC 434 emitting nebula about 1500 years - light of the Earth in the constellation Orion. At the bottom left, the nebula NGC 2024 with just above the star Alnitak, a supergiant star belonging to the Baudrier of Orion. Towards the center of the image, a reflexion nebula, NGC 2023. Image obtained with the 1.2m Schmidt UK Telescope from Siding Spring. This distinctive red emission nebula (IC 434) is the result of radiation from sigma Orionis interacting with the surface of a dusty cloud of gas from which projects the dark shape of the head of a horse. Sigma is the second brightest star in the picture and is at about the same distance from the Sun as the nebula. The brightest star here is zeta Orionis, easily visible to the unaided eye as the easternmost star in the line of three which form Orion's Belt. Alnitak (Zeta Orionis) is a supergiant star

Horse's Head Nebula (IC 434) in Orion - Horsehead nebula in Orion - The horse's head nebula, Barnard 33, is a dark nebula located in front of the IC 434 emitting nebula about 1500 years - light of the Earth in the constellation Orion. At the bottom left, the nebula NGC 2024 with just above the star Alnitak, a supergiant star belonging to the Baudrier of Orion. Towards the center of the image, a reflexion nebula, NGC 2023. Image obtained with the 1.2m Schmidt UK Telescope from Siding Spring. This distinctive red emission nebula (IC 434) is the result of radiation from sigma Orionis interacting with the surface of a dusty cloud of gas from which projects the dark shape of the head of a horse. Sigma is the second brightest star in the picture and is at about the same distance from the Sun as the nebula. The brightest star here is zeta Orionis, easily visible to the unaided eye as the easternmost star in the line of three which form Orion's Belt. Alnitak (Zeta Orionis) is a supergiant star

PIX4621983

Maison Carrée, NIMES, 2021 (photo)

Maison Carrée, NIMES, 2021 (photo)

Roman, (1st century AD)

Sergi Reboredo

SRB7204075

Star Formation in Cassiopee - Star Formation in Cassiopeia - This star-forming region, called W5, is located approximately 6500 light years ago in the constellation Cassiopee. Several generations of stars appear on this cliche; the older ones are the blue stars in the centre of the two cavities; the younger stars are grouped at the edges of these cavities and at the ends of the gas pillars or they appear like pink dots; the white areas are home to the very young stars in formation. In this infrared image, heated dust appears in red, dense gas clouds appear in green. Composite image obtained by the Spitzer space telescope in 2006 and 2007. Generations of stars can be seen in this infrared portrait from Nasa's Spitzer Space Telescope. In this wispy star - forming region, called W5, the oldest stars can be seen as blue dots in the centers of the two hollow cavities (other blue dots are background and foreground stars not associated with the region). Younger stars line the rims of the cavi

Star Formation in Cassiopee - Star Formation in Cassiopeia - This star-forming region, called W5, is located approximately 6500 light years ago in the constellation Cassiopee. Several generations of stars appear on this cliche; the older ones are the blue stars in the centre of the two cavities; the younger stars are grouped at the edges of these cavities and at the ends of the gas pillars or they appear like pink dots; the white areas are home to the very young stars in formation. In this infrared image, heated dust appears in red, dense gas clouds appear in green. Composite image obtained by the Spitzer space telescope in 2006 and 2007. Generations of stars can be seen in this infrared portrait from Nasa's Spitzer Space Telescope. In this wispy star - forming region, called W5, the oldest stars can be seen as blue dots in the centers of the two hollow cavities (other blue dots are background and foreground stars not associated with the region). Younger stars line the rims of the cavi

PIX4621160

Interacting galaxies NGC 2936 and NGC 2937 - Interacting Galaxies NGC 2936 and NGC 2937 in Hydra - These two interacting galaxies also called Arp 142 are located approximately 326 million years ago - light from Earth in the constellation Hydra. NGC 2936 is a spiral galaxy, NGC 2937 is an elliptical galaxy. Above the torque, a blue galaxy UGC 5130, located closer to us is 230 million light years. Image obtained by the Hubble Space Telescope (HST). This interacting galaxy duo is collectively called Arp 142. The pair contains the disturbed, star - forming spiral galaxy NGC 2936, along with its elliptical companion, NGC 2937 at lower left. Once part of a flat, spiral disk, the orbits of the galaxy's stars have become scrambled due to gravitational tidal interactions with the other galaxy. This warps the galaxy's orderly spiral, and interstellar gas is strewn out into giant tails like stretched taffy. Gas and dust drawn from the heart of NGC 2936 becomes compressed during the encounter, whi

Interacting galaxies NGC 2936 and NGC 2937 - Interacting Galaxies NGC 2936 and NGC 2937 in Hydra - These two interacting galaxies also called Arp 142 are located approximately 326 million years ago - light from Earth in the constellation Hydra. NGC 2936 is a spiral galaxy, NGC 2937 is an elliptical galaxy. Above the torque, a blue galaxy UGC 5130, located closer to us is 230 million light years. Image obtained by the Hubble Space Telescope (HST). This interacting galaxy duo is collectively called Arp 142. The pair contains the disturbed, star - forming spiral galaxy NGC 2936, along with its elliptical companion, NGC 2937 at lower left. Once part of a flat, spiral disk, the orbits of the galaxy's stars have become scrambled due to gravitational tidal interactions with the other galaxy. This warps the galaxy's orderly spiral, and interstellar gas is strewn out into giant tails like stretched taffy. Gas and dust drawn from the heart of NGC 2936 becomes compressed during the encounter, whi

PIX4610249

Galaxy NGC 4631 in Hunting Dogs - Spiral galaxy NGC 4631 in Canes Venatici - Spiral galaxy seen by the slice located at a distance of 30 million years - light. Image obtained by the Hubble Space Telescope (HST). The NASA/ESA Hubble Space Telescope has peered deep into NGC 4631, better known as the Whale Galaxy. Here, a profusion of starbirth lights up the galactic centre, revealing bands of dark material between us and the starburst. The galaxy's activity tapers off in its outer regions where there are fewer stars and less dust, but these are still punctuated by pockets of star formation. The Whale Galaxy is about 30 million light - years away from us in the constellation of Canes Venatici (The Hunting Dogs) and is a spiral galaxy much like the Milky Way. From our vantage point, however, we see the Whale Galaxy edge - on, seeing its glowing centre through dusty spiral arms. The galaxy's central bulge and asymmetric tapering disc have suggested the shape of a whale or a herring to past

Galaxy NGC 4631 in Hunting Dogs - Spiral galaxy NGC 4631 in Canes Venatici - Spiral galaxy seen by the slice located at a distance of 30 million years - light. Image obtained by the Hubble Space Telescope (HST). The NASA/ESA Hubble Space Telescope has peered deep into NGC 4631, better known as the Whale Galaxy. Here, a profusion of starbirth lights up the galactic centre, revealing bands of dark material between us and the starburst. The galaxy's activity tapers off in its outer regions where there are fewer stars and less dust, but these are still punctuated by pockets of star formation. The Whale Galaxy is about 30 million light - years away from us in the constellation of Canes Venatici (The Hunting Dogs) and is a spiral galaxy much like the Milky Way. From our vantage point, however, we see the Whale Galaxy edge - on, seeing its glowing centre through dusty spiral arms. The galaxy's central bulge and asymmetric tapering disc have suggested the shape of a whale or a herring to past

PIX4611784

Nebula N11 in the Great Magellan Cloud - N11 star forming region in Large Magellanic Cloud (LMC) - N11 (Henize 11) is a vast star-forming region located in the Great Magellan Cloud galaxy. It is home to a cluster of hot young stars, NGC 1760. This glowing complex of rings, shells, and powerful young stars lies in the Large Magellanic Cloud, a satellite galaxy of the Milky Way. The overall complex of glowing gas and stars is known as N11 while the central cluster of hot young blue stars is know as NGC 1760. The complex expanding shells of gas have likely formed from multiple generations of hot O and B type stars and their supernovae. N11 spans over 1000 light years across

Nebula N11 in the Great Magellan Cloud - N11 star forming region in Large Magellanic Cloud (LMC) - N11 (Henize 11) is a vast star-forming region located in the Great Magellan Cloud galaxy. It is home to a cluster of hot young stars, NGC 1760. This glowing complex of rings, shells, and powerful young stars lies in the Large Magellanic Cloud, a satellite galaxy of the Milky Way. The overall complex of glowing gas and stars is known as N11 while the central cluster of hot young blue stars is know as NGC 1760. The complex expanding shells of gas have likely formed from multiple generations of hot O and B type stars and their supernovae. N11 spans over 1000 light years across

R. Gendler

PIX4620765

Remains of the supernova Cassiopee A/HST - Cassiopeia A: Colorful, Shredded Remains of Old Supernova Glowing gaseous streamers of red, white, and blue - - as well as green and pink - - illuminate the heavens like Fourth of July fireworks. The colorful streamers that float across the sky in this photo taken by Nasa's Hubble Space Telescope were created by one of the biggest firecrackers seen to go off in our galaxy in recorded history, the titanic supernova explosion of a massive star. The light from the exploding star reached Earth 320 years ago, nearly a century before our United States celebrated its birth with a blow. The dead star's shredded remains are called Cassiopeia A, or “” Cas A”” for short. Cas A is the youngest known supernova remnant in our Milky Way Galaxy and resides 10,000 light - years away in the constellation Cassiopeia, so the star actually blew up 10,000 years before the light reached Earth in the late 1600s. This stunning Hubble image of Cas A is allowing astrono

Remains of the supernova Cassiopee A/HST - Cassiopeia A: Colorful, Shredded Remains of Old Supernova Glowing gaseous streamers of red, white, and blue - - as well as green and pink - - illuminate the heavens like Fourth of July fireworks. The colorful streamers that float across the sky in this photo taken by Nasa's Hubble Space Telescope were created by one of the biggest firecrackers seen to go off in our galaxy in recorded history, the titanic supernova explosion of a massive star. The light from the exploding star reached Earth 320 years ago, nearly a century before our United States celebrated its birth with a blow. The dead star's shredded remains are called Cassiopeia A, or “” Cas A”” for short. Cas A is the youngest known supernova remnant in our Milky Way Galaxy and resides 10,000 light - years away in the constellation Cassiopeia, so the star actually blew up 10,000 years before the light reached Earth in the late 1600s. This stunning Hubble image of Cas A is allowing astrono

PIX4582924

Uranus - true and false colors - Voyager 2 - Uranus in true and false colors - Images obtained by the Voyager 2 probe on January 17, 1986 at 9.1 million km from Uranus. On the left image in real colors, the blue color is due to the presence of methane in the atmosphere of the planet; on the right, the false colours show a thick layer of fog around the south pole. The axis of rotation of the planet is different from that of all other planets in the solar system. While for most planets this axis is almost vertical, for Uranus it is almost lying on the plane of its orbit. These two pictures of Uranus - - one in true color (left) and the other in false color - - were compiled from images returned Jan. 17, 1986, by the narrow - angle camera of Voyager 2. The spacecraft was 9.1 million kilometers (5.7 million miles) from the planet, several days from closest approach. The picture at left has been processed to show Uranus as human eyes would see it from the vantage point of the spacecraft. Th

Uranus - true and false colors - Voyager 2 - Uranus in true and false colors - Images obtained by the Voyager 2 probe on January 17, 1986 at 9.1 million km from Uranus. On the left image in real colors, the blue color is due to the presence of methane in the atmosphere of the planet; on the right, the false colours show a thick layer of fog around the south pole. The axis of rotation of the planet is different from that of all other planets in the solar system. While for most planets this axis is almost vertical, for Uranus it is almost lying on the plane of its orbit. These two pictures of Uranus - - one in true color (left) and the other in false color - - were compiled from images returned Jan. 17, 1986, by the narrow - angle camera of Voyager 2. The spacecraft was 9.1 million kilometers (5.7 million miles) from the planet, several days from closest approach. The picture at left has been processed to show Uranus as human eyes would see it from the vantage point of the spacecraft. Th

PIX4634727

Galactic Center Region - The Galactic Center - The Galactic Center Region of the center of our galaxy seen the Chandra, Spitzer and Hubble satellites. The galactic center (Sagittarius A*) is located in the white area in the middle to the right of the image. In yellow, near-infrared images obtained by the Hubble Space Telescope; in red, infrared images obtained by the Spitzer Space Telescope; in blue and purple, X-ray observations obtained by the Chandra Space Telescope. Nasa's Great Observatories - the Hubble Space Telescope, the Spitzer Space Telescope, and the Chandra X-ray Observatory - have collaborated to produce an unprecedented image of the central region of our Milky Way galaxy. In this spectacular image, observations using infrared light and X-ray light see through the obscuring dust and reveal the intense activity near the galactic core. Note that the center of the galaxy is located within the bright white region to the right of and just below the middle of the image. The ent

Galactic Center Region - The Galactic Center - The Galactic Center Region of the center of our galaxy seen the Chandra, Spitzer and Hubble satellites. The galactic center (Sagittarius A*) is located in the white area in the middle to the right of the image. In yellow, near-infrared images obtained by the Hubble Space Telescope; in red, infrared images obtained by the Spitzer Space Telescope; in blue and purple, X-ray observations obtained by the Chandra Space Telescope. Nasa's Great Observatories - the Hubble Space Telescope, the Spitzer Space Telescope, and the Chandra X-ray Observatory - have collaborated to produce an unprecedented image of the central region of our Milky Way galaxy. In this spectacular image, observations using infrared light and X-ray light see through the obscuring dust and reveal the intense activity near the galactic core. Note that the center of the galaxy is located within the bright white region to the right of and just below the middle of the image. The ent

PIX4637984

Map of the sky seen by Planck - The microwave sky as seen by Planck - 380,000 years after the formation of the universe, when the temperature had become low enough, the light could be released from the extremely dense material that imprisoned it and spread throughout the universe. This moment appears to us today in the form of a radiation called fossil radiation, or cosmological diffuse background. This image is the map of temperature fluctuations of the cosmological diffuse background (in orange) seen by the Planck satellite between August 2009 and June 2010. Overlay, in blue, the Lactee Way and clear, filamentary structures that extend beyond the plane of our Lactee Way. This multi-frequency all-sky image of the microwave sky has been composed using data from Planck covering the electromagnetic spectrum from 30 GHz to 857 GHz. The mottled structure of the CMBR, with its tiny temperature fluctuations reflecting the primordial density variations from which today's cosmic structure orig

Map of the sky seen by Planck - The microwave sky as seen by Planck - 380,000 years after the formation of the universe, when the temperature had become low enough, the light could be released from the extremely dense material that imprisoned it and spread throughout the universe. This moment appears to us today in the form of a radiation called fossil radiation, or cosmological diffuse background. This image is the map of temperature fluctuations of the cosmological diffuse background (in orange) seen by the Planck satellite between August 2009 and June 2010. Overlay, in blue, the Lactee Way and clear, filamentary structures that extend beyond the plane of our Lactee Way. This multi-frequency all-sky image of the microwave sky has been composed using data from Planck covering the electromagnetic spectrum from 30 GHz to 857 GHz. The mottled structure of the CMBR, with its tiny temperature fluctuations reflecting the primordial density variations from which today's cosmic structure orig

PIX4634312

Netherlands, True Colour Satellite Image With Mask

Netherlands, True Colour Satellite Image With Mask

UIG601631

Nebuleuse Barnard 86 & open cluster NGC 6520 - Dark nebula Barnard 86 and open cluster NGC 6520 - NGC 6520, is a cluster of young stars aged a few million years. To its right is the dark nebula, Barnard 86, a cloud of molecular gas and dust, very cold, in which these stars have become formed. In the background, the billions of years old stars of Sagittarius. NGC 6520 is a small cluster of young blue stars. In the same region is a dark cloud, Barnard 86. The cluster and cloud are probably associated and the dust is visible only because it blocks out light from the myriads of stars beyond. On the distant background, old yellowish stars in Sagittarius are visible in vast numbers

Nebuleuse Barnard 86 & open cluster NGC 6520 - Dark nebula Barnard 86 and open cluster NGC 6520 - NGC 6520, is a cluster of young stars aged a few million years. To its right is the dark nebula, Barnard 86, a cloud of molecular gas and dust, very cold, in which these stars have become formed. In the background, the billions of years old stars of Sagittarius. NGC 6520 is a small cluster of young blue stars. In the same region is a dark cloud, Barnard 86. The cluster and cloud are probably associated and the dust is visible only because it blocks out light from the myriads of stars beyond. On the distant background, old yellowish stars in Sagittarius are visible in vast numbers

R. Gendler

PIX4621354

Saint John the Baptist Preaching

Saint John the Baptist Preaching

MEV5050100

The planet Uranus, 1986

The planet Uranus, 1986

UIS5072287

Storage seat, c.1955 (joined and veneered teak base with sprung support and foam-filled wool fabric covered cushions) (see also 3084391)

Storage seat, c.1955 (joined and veneered teak base with sprung support and foam-filled wool fabric covered cushions) (see also 3084391)

Danish School, (20th century)

JEF3084388

Storage seat, c.1955 (joined and veneered teak base with sprung support and foam-filled wool fabric covered cushions) (see also 3084388)

Storage seat, c.1955 (joined and veneered teak base with sprung support and foam-filled wool fabric covered cushions) (see also 3084388)

Danish School, (20th century)

JEF3084391

Thunderstorms seen from space shuttle Discovery - 09/1994 - Thunderstorms seen from space shuttle Discovery - Thunderstorms over the Pacific Ocean seen by space shuttle Discovery in September 1994. Multiple thunderstorm cells leading to Earth's atmosphere were photographed on 70 mm by the astronauts, orbiting aboard the space shuttle Discovery 130 nautical miles away. These thunderstorms are located about 16 degrees southeast of Hawaii in the Pacific Ocean. Every stage of a developing thunderstorm is documented in this photo; from the building cauliflower tops to the mature anvil phase. The anvil or the tops of the clouds being blown off are at about 50,000 feet. The light line in the blue atmosphere is either clouds in the distance or an atmospheric layer which is defined but different particle sizes. Sep 1994

Thunderstorms seen from space shuttle Discovery - 09/1994 - Thunderstorms seen from space shuttle Discovery - Thunderstorms over the Pacific Ocean seen by space shuttle Discovery in September 1994. Multiple thunderstorm cells leading to Earth's atmosphere were photographed on 70 mm by the astronauts, orbiting aboard the space shuttle Discovery 130 nautical miles away. These thunderstorms are located about 16 degrees southeast of Hawaii in the Pacific Ocean. Every stage of a developing thunderstorm is documented in this photo; from the building cauliflower tops to the mature anvil phase. The anvil or the tops of the clouds being blown off are at about 50,000 feet. The light line in the blue atmosphere is either clouds in the distance or an atmospheric layer which is defined but different particle sizes. Sep 1994

PIX4674503

Horsehead Nebula (IC 434) in Orion - Horsehead Nebula (B33) in Orion - The horse's head nebula, Barnard 33, is a dark nebula located in front of the IC 434 emitting nebula about 1500 years - light from Earth in the constellation Orion. At the bottom left, the nebula NGC 2024 with just above the star Alnitak, a supergiant star belonging to the Baudrier of Orion. Towards the center of the image, a reflexion nebula, NGC 2023. Image obtained with the 1.2m Schmidt UK Telescope from Siding Spring. This distinctive red emission nebula (IC 434) is the result of radiation from sigma Orionis interacting with the surface of a dusty cloud of gas from which projects the dark shape of the head of a horse. Sigma is the second brightest star in the picture and is at about the same distance from the Sun as the nebula. The brightest star here is zeta Orionis, easily visible to the unaided eye as the easternmost star in the line of three which form Orion's Belt. Alnitak (Zeta Orionis) is a supergiant sta

Horsehead Nebula (IC 434) in Orion - Horsehead Nebula (B33) in Orion - The horse's head nebula, Barnard 33, is a dark nebula located in front of the IC 434 emitting nebula about 1500 years - light from Earth in the constellation Orion. At the bottom left, the nebula NGC 2024 with just above the star Alnitak, a supergiant star belonging to the Baudrier of Orion. Towards the center of the image, a reflexion nebula, NGC 2023. Image obtained with the 1.2m Schmidt UK Telescope from Siding Spring. This distinctive red emission nebula (IC 434) is the result of radiation from sigma Orionis interacting with the surface of a dusty cloud of gas from which projects the dark shape of the head of a horse. Sigma is the second brightest star in the picture and is at about the same distance from the Sun as the nebula. The brightest star here is zeta Orionis, easily visible to the unaided eye as the easternmost star in the line of three which form Orion's Belt. Alnitak (Zeta Orionis) is a supergiant sta

PIX4622085

Nebula IC 1396 in Cephee infrared view - 18/12/2003 The large composite image on the left is a product of combining data from the observator's multiband imaging photometer and the infrared array camera. The thermal emission at 24 microns measured by the photometer (red) is combined with near - infrared emission from the camera at 3.6/4.5 microns (blue) and from 5.8/8.0 microns (green). The colors of the diffuse emission and filaments vary, and are a combination of molecular hydrogen (which tends to be green) and polycyclic aromatic hydrocarbon (brown) emissions. Nasa's Spitzer Space Telescope image of a glowing stellar nursery provides a spectacular contrast to the opaque cloud seen in visible light. The Elephant's Trunk Nebula is an elongated dark globule within the emission nebula IC 1396 in the constellation of Cepheus. Located at a distance of 2,450 light - years, the globule is a condensation of dense gas that is barely surviving the strong ionizing radiation from a nearby massive

Nebula IC 1396 in Cephee infrared view - 18/12/2003 The large composite image on the left is a product of combining data from the observator's multiband imaging photometer and the infrared array camera. The thermal emission at 24 microns measured by the photometer (red) is combined with near - infrared emission from the camera at 3.6/4.5 microns (blue) and from 5.8/8.0 microns (green). The colors of the diffuse emission and filaments vary, and are a combination of molecular hydrogen (which tends to be green) and polycyclic aromatic hydrocarbon (brown) emissions. Nasa's Spitzer Space Telescope image of a glowing stellar nursery provides a spectacular contrast to the opaque cloud seen in visible light. The Elephant's Trunk Nebula is an elongated dark globule within the emission nebula IC 1396 in the constellation of Cepheus. Located at a distance of 2,450 light - years, the globule is a condensation of dense gas that is barely surviving the strong ionizing radiation from a nearby massive

PIX4622272

Horsehead Nebula (IC 434) in Orion - Horsehead Nebula (B33) in Orion - The horse's head nebula, Barnard 33, is a dark nebula located in front of the IC 434 emitting nebula about 1500 years - light from Earth in the constellation Orion. At the bottom left, the nebula NGC 2024 with just above the star Alnitak, a supergiant star belonging to the Baudrier of Orion. Towards the center of the image, a reflexion nebula, NGC 2023. Image obtained with the 1.2m Schmidt UK Telescope from Siding Spring. This distinctive red emission nebula (IC 434) is the result of radiation from sigma Orionis interacting with the surface of a dusty cloud of gas from which projects the dark shape of the head of a horse. Sigma is the second brightest star in the picture and is at about the same distance from the Sun as the nebula. The brightest star here is zeta Orionis, easily visible to the unaided eye as the easternmost star in the line of three which form Orion's Belt. Alnitak (Zeta Orionis) is a supergiant sta

Horsehead Nebula (IC 434) in Orion - Horsehead Nebula (B33) in Orion - The horse's head nebula, Barnard 33, is a dark nebula located in front of the IC 434 emitting nebula about 1500 years - light from Earth in the constellation Orion. At the bottom left, the nebula NGC 2024 with just above the star Alnitak, a supergiant star belonging to the Baudrier of Orion. Towards the center of the image, a reflexion nebula, NGC 2023. Image obtained with the 1.2m Schmidt UK Telescope from Siding Spring. This distinctive red emission nebula (IC 434) is the result of radiation from sigma Orionis interacting with the surface of a dusty cloud of gas from which projects the dark shape of the head of a horse. Sigma is the second brightest star in the picture and is at about the same distance from the Sun as the nebula. The brightest star here is zeta Orionis, easily visible to the unaided eye as the easternmost star in the line of three which form Orion's Belt. Alnitak (Zeta Orionis) is a supergiant sta

PIX4622070

Maison Carrée, NIMES, 2021 (photo)

Maison Carrée, NIMES, 2021 (photo)

Roman, (1st century AD)

Sergi Reboredo

SRB7204085

Maison Carrée, NIMES, 2021 (photo)

Maison Carrée, NIMES, 2021 (photo)

Roman, (1st century AD)

Sergi Reboredo

SRB7204095

Maison Carrée, NIMES, 2021 (photo)

Maison Carrée, NIMES, 2021 (photo)

Roman, (1st century AD)

Sergi Reboredo

SRB7204106

Netherlands, True Colour Satellite Image

Netherlands, True Colour Satellite Image

UIG601630

Nebula Trifide (M20) in the constellation Sagittarius - Trifid nebula (M20) and open cluster M21 - View of the Trifide nebula (M20/NGC 6514) located in the constellation Sagittarius between 5000 and 10,000 years - light from Earth. Above it, the M21 star cluster. M20, the Trifid Nebula is a remarkable object, large, bright and beautiful. It is a complex of red emission and blue reflection nebulosity about the size of the full moon, intersected by three dark lanes, from which the Trifid gets its name. M21 is a rich open cluster comprised of some 70 stars with a large brightness range and strong central condensation, approximately 13 arc minutes in diameter and magnitude 5.9, and located 1/2 degree to the northeast of M20

Nebula Trifide (M20) in the constellation Sagittarius - Trifid nebula (M20) and open cluster M21 - View of the Trifide nebula (M20/NGC 6514) located in the constellation Sagittarius between 5000 and 10,000 years - light from Earth. Above it, the M21 star cluster. M20, the Trifid Nebula is a remarkable object, large, bright and beautiful. It is a complex of red emission and blue reflection nebulosity about the size of the full moon, intersected by three dark lanes, from which the Trifid gets its name. M21 is a rich open cluster comprised of some 70 stars with a large brightness range and strong central condensation, approximately 13 arc minutes in diameter and magnitude 5.9, and located 1/2 degree to the northeast of M20

Jerry Lodriguss

PIX4619427

Edward Geoffrey Smith-Stanley, 14th Earl of Derby, KG, PC (1799-1869) (after Sir Francis Grant)

Edward Geoffrey Smith-Stanley, 14th Earl of Derby, KG, PC (1799-1869) (after Sir Francis Grant)

Hawkins, Jane (1841-1904)

USB1156797

Nebuleuse Barnard 86 & open cluster NGC 6520 - Dark nebula Barnard 86 and open cluster NGC 6520 - NGC 6520, is a cluster of young stars, aged a few million years. To its right is the dark nebula, Barnard 86, a cloud of molecular gas and dust, very cold, in which these stars have become formed. In the background, the billions of years old stars of Sagittarius. NGC 6520 is a small cluster of young blue stars. In the same region is a dark cloud, Barnard 86. The cluster and cloud are probably associated and the dust is visible only because it blocks out light from the myriads of stars beyond. On the distant background, old yellowish stars in Sagittarius are visible in vast numbers

Nebuleuse Barnard 86 & open cluster NGC 6520 - Dark nebula Barnard 86 and open cluster NGC 6520 - NGC 6520, is a cluster of young stars, aged a few million years. To its right is the dark nebula, Barnard 86, a cloud of molecular gas and dust, very cold, in which these stars have become formed. In the background, the billions of years old stars of Sagittarius. NGC 6520 is a small cluster of young blue stars. In the same region is a dark cloud, Barnard 86. The cluster and cloud are probably associated and the dust is visible only because it blocks out light from the myriads of stars beyond. On the distant background, old yellowish stars in Sagittarius are visible in vast numbers

PIX4621326

Spiral Galaxy M94 in Hunting Dogs - Spiral galaxy M94 in Canes Venatici - The spiral galaxy M94 (NGC 4736) is located about 15 million years ago - light from Earth. The M94 spiral galaxy was classified as Sab because of the extreme luminosite of its central region. This galaxy has several ring zones of star formation, one of which is very active. Messier 94 (NGC 4736) is a spiral galaxy located in constellation Canes Venatici, and one of the nearer beyond our Local Group of Galaxies. M94 was classified Sab because of its extremely bright inner region. This bright circular disk is surrounded by a ring of active star - forming regions, traced by blue young star clusters

Spiral Galaxy M94 in Hunting Dogs - Spiral galaxy M94 in Canes Venatici - The spiral galaxy M94 (NGC 4736) is located about 15 million years ago - light from Earth. The M94 spiral galaxy was classified as Sab because of the extreme luminosite of its central region. This galaxy has several ring zones of star formation, one of which is very active. Messier 94 (NGC 4736) is a spiral galaxy located in constellation Canes Venatici, and one of the nearer beyond our Local Group of Galaxies. M94 was classified Sab because of its extremely bright inner region. This bright circular disk is surrounded by a ring of active star - forming regions, traced by blue young star clusters

Jim Misti

PIX4611936

Maison Carrée, NIMES, 2021 (photo)

Maison Carrée, NIMES, 2021 (photo)

Roman, (1st century AD)

Sergi Reboredo

SRB7204073

Maison Carrée, NIMES, 2021 (photo)

Maison Carrée, NIMES, 2021 (photo)

Roman, (1st century AD)

Sergi Reboredo

SRB7204098

Maison Carrée, NIMES, 2021 (photo)

Maison Carrée, NIMES, 2021 (photo)

Roman, (1st century AD)

Sergi Reboredo

SRB7204071

Centaurus A elliptical galaxy (NGC 5128) in the Centaurus - Galaxy Centaurus A (NGC 5128) - The galaxy NGC 5128 is located about 13 million years away from Earth. This composite image reveals the lobes and jets that escape from the center of this active galaxy, or replaces a black hole. To produce this image, three instruments observing in different wavelengths were used; in orange, the data obtained by the APEX submillimetre telescope, in blue the X-ray image obtained by the Chandra space telescope, in visible, the image obtained by the 2,2m MPG telescope of La Silla in Chile. Colour composite image of Centaurus A, revealing the lobes and jets emanating from the active galaxy's central black hole. This is a composite of images obtained with three instruments, operating at very different wavelengths. The 870 - micron submillimetre data, from LABOCA on APEX, are shown in orange. X - ray data from the Chandra X - ray Observatory are shown in blue. Visible light data from the Wide Field I

Centaurus A elliptical galaxy (NGC 5128) in the Centaurus - Galaxy Centaurus A (NGC 5128) - The galaxy NGC 5128 is located about 13 million years away from Earth. This composite image reveals the lobes and jets that escape from the center of this active galaxy, or replaces a black hole. To produce this image, three instruments observing in different wavelengths were used; in orange, the data obtained by the APEX submillimetre telescope, in blue the X-ray image obtained by the Chandra space telescope, in visible, the image obtained by the 2,2m MPG telescope of La Silla in Chile. Colour composite image of Centaurus A, revealing the lobes and jets emanating from the active galaxy's central black hole. This is a composite of images obtained with three instruments, operating at very different wavelengths. The 870 - micron submillimetre data, from LABOCA on APEX, are shown in orange. X - ray data from the Chandra X - ray Observatory are shown in blue. Visible light data from the Wide Field I

PIX4612291

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

Nebula North America in the Swan - The North America Nebula - The North America Nebula (NGC 7000) is a large emission nebula located near the star Deneb in the constellation Swan. NGC 7000 is the North America Nebula in Cygnus. Located just 3 degrees east - southeast of Deneb, the brightest star in Cygnus, this large 2 x 3 degree area of red hydrogen - alpha emission nebulosity is a complex star - forming region choked with gas and obscuring dust. It is located about 1,500 light years away and is about 50 light years wide. Three open clusters are associated with the North America Nebula: NGC 6989 in the north - west part of the nebula, NGC 6996 in the north, and NGC 6997 in the west. LDN 935 is the dark nebula that makes up the Gulf of Mexico region, and B253 is the dark nebula at the top (north) of the image. The two brightest stars in the image are Xi Cygnii, the 3.7 magnitude red star at left, and 57 Cygnii, the 4.8 magnitude blue - white star at the right. The North America Nebula

Nebula North America in the Swan - The North America Nebula - The North America Nebula (NGC 7000) is a large emission nebula located near the star Deneb in the constellation Swan. NGC 7000 is the North America Nebula in Cygnus. Located just 3 degrees east - southeast of Deneb, the brightest star in Cygnus, this large 2 x 3 degree area of red hydrogen - alpha emission nebulosity is a complex star - forming region choked with gas and obscuring dust. It is located about 1,500 light years away and is about 50 light years wide. Three open clusters are associated with the North America Nebula: NGC 6989 in the north - west part of the nebula, NGC 6996 in the north, and NGC 6997 in the west. LDN 935 is the dark nebula that makes up the Gulf of Mexico region, and B253 is the dark nebula at the top (north) of the image. The two brightest stars in the image are Xi Cygnii, the 3.7 magnitude red star at left, and 57 Cygnii, the 4.8 magnitude blue - white star at the right. The North America Nebula

Jerry Lodriguss

PIX4620479

Variable star PV Cephei and nebula Gyulbudagyan - Variable star PV Cephei with Gyulbudagyan's nebula - PV Cephei is an excessively fast variable star, moving almost 20 km per second in the interstellar medium. This young star, formed about 500,000 years ago, is now more than 30 years ago - light from its birthplace, the cluster of stars of the Iris nebula, NGC 7023. PV Cephei is the small orange star with a gas cloud located in the upper left middle of the image. Image obtained on October 19, 2008 with a telescope measuring 61 cm in diameter. PV Cephei is a variable star moving at roughly 20 km/sec through the interstellar medium. This young star was formed about 500,000 years ago and is located now at about 30 light years from its birth place, the star cluster of Iris nebula (NGC 7023). PV Cephei is the small oranged star visible near the middle of the image, at right of the brilliant blue star. It is associated with a small cloud of gas. Image taken on October 19 2008 with a 24 - inc

Variable star PV Cephei and nebula Gyulbudagyan - Variable star PV Cephei with Gyulbudagyan's nebula - PV Cephei is an excessively fast variable star, moving almost 20 km per second in the interstellar medium. This young star, formed about 500,000 years ago, is now more than 30 years ago - light from its birthplace, the cluster of stars of the Iris nebula, NGC 7023. PV Cephei is the small orange star with a gas cloud located in the upper left middle of the image. Image obtained on October 19, 2008 with a telescope measuring 61 cm in diameter. PV Cephei is a variable star moving at roughly 20 km/sec through the interstellar medium. This young star was formed about 500,000 years ago and is located now at about 30 light years from its birth place, the star cluster of Iris nebula (NGC 7023). PV Cephei is the small oranged star visible near the middle of the image, at right of the brilliant blue star. It is associated with a small cloud of gas. Image taken on October 19 2008 with a 24 - inc

Adam Block

PIX4572360

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

Spiral galaxy M101 in the Great Bear - Spiral galaxy M101 in Ursa Major - The galaxy M101 (NGC 5457) is located about 27 million years away from Earth. It spans more than 170,000 light years, almost double the size of our galaxy. We think that of the trillion stars in it, 100 billion stars could be similar to our Sun. Composite image obtained from 51 different clicks made by the Hubble space telescope from March 1994 to January 2003 and from ground photos at Kitt Peak and CFHT in Hawaii. Spiral galaxy M101 is a beautiful, large, face - on spiral galaxy located about 27 million light - years away in the constellation Ursa Major. This galaxy's portrait is actually composed of 51 individual Hubble exposures, in addition to elements from images from ground - based photos. The giant spiral disk of stars, dust, and gas is 170,000 light - years across or almost twice the diameter of our galaxy, the Milky Way. M101 is estimated to contain at least one trillion stars. Approximately 100 billion

Spiral galaxy M101 in the Great Bear - Spiral galaxy M101 in Ursa Major - The galaxy M101 (NGC 5457) is located about 27 million years away from Earth. It spans more than 170,000 light years, almost double the size of our galaxy. We think that of the trillion stars in it, 100 billion stars could be similar to our Sun. Composite image obtained from 51 different clicks made by the Hubble space telescope from March 1994 to January 2003 and from ground photos at Kitt Peak and CFHT in Hawaii. Spiral galaxy M101 is a beautiful, large, face - on spiral galaxy located about 27 million light - years away in the constellation Ursa Major. This galaxy's portrait is actually composed of 51 individual Hubble exposures, in addition to elements from images from ground - based photos. The giant spiral disk of stars, dust, and gas is 170,000 light - years across or almost twice the diameter of our galaxy, the Milky Way. M101 is estimated to contain at least one trillion stars. Approximately 100 billion

PIX4612686

Maison Carrée, NIMES, 2021 (photo)

Maison Carrée, NIMES, 2021 (photo)

Roman, (1st century AD)

Sergi Reboredo

SRB7204088

Maison Carrée, NIMES, 2021 (photo)

Maison Carrée, NIMES, 2021 (photo)

Roman, (1st century AD)

Sergi Reboredo

SRB7204090

Maison Carrée, NIMES, 2021 (photo)

Maison Carrée, NIMES, 2021 (photo)

Roman, (1st century AD)

Sergi Reboredo

SRB7204094

Andromede galaxy (M31) seen in X and infrared - Andromeda galaxy infrared and X - Ray composite - Andromede spiral galaxy seen in X-ray (blue) by the XMM - Newton space telescope and in infrared (orange) by the Herschel space telescope. This mosaic of the Andromeda spiral galaxy highlights explosive stars in its interior, and cooler, dusty stars forming in its many rings. The image is a combination of observations from the Herschel Space Observatory taken in infrared light (seen in orange hues), and the XMM - Newton telescope captured in X - rays (seen in blues). Herschel provides a detailed look at the cool clouds of star birth that line the galaxy's five concentric rings. Massive young stars are heating blankets of dust that surround them, causing them to glow in the longer - wavelength infrared light, known as far - infrared, that Herschel sees. In contrast, XMM - Newton is capturing what happens at the end of the lives of massive stars. It shows the high - energy X - rays that come

Andromede galaxy (M31) seen in X and infrared - Andromeda galaxy infrared and X - Ray composite - Andromede spiral galaxy seen in X-ray (blue) by the XMM - Newton space telescope and in infrared (orange) by the Herschel space telescope. This mosaic of the Andromeda spiral galaxy highlights explosive stars in its interior, and cooler, dusty stars forming in its many rings. The image is a combination of observations from the Herschel Space Observatory taken in infrared light (seen in orange hues), and the XMM - Newton telescope captured in X - rays (seen in blues). Herschel provides a detailed look at the cool clouds of star birth that line the galaxy's five concentric rings. Massive young stars are heating blankets of dust that surround them, causing them to glow in the longer - wavelength infrared light, known as far - infrared, that Herschel sees. In contrast, XMM - Newton is capturing what happens at the end of the lives of massive stars. It shows the high - energy X - rays that come

PIX4609049

Spiral galaxy M74 in Pisces - Spiral galaxy M74 in Pisces - Image of the spiral galaxy M74 (NGC 628). This galaxy is about 80,000 light years and is 30 million light years apart. Viewed face on, as it appeared about 30 million years ago, M74 is considered to be one of the most photogenic spiral galaxies in the sky. The galaxy is rich in young bright blue stars and glowing red regions of dust and molecular hydrogen where new stars are being created. M74, however, is quite camera shy - it has a low surface brightness that makes it challenging for both visual observers and astrophotographers to see it's entire form. The Chandra X - Ray observatory, discovered M74 to be the home of a super massive black hole, tucked away in one of it's outer arms. This black hole is one of the largest ever discovered and has the mass of over 10,000 suns. Thirty six, fifteen minute photographs were combined to create this picture, with a total exposure time of almost nine hours. The images were taken with a

Spiral galaxy M74 in Pisces - Spiral galaxy M74 in Pisces - Image of the spiral galaxy M74 (NGC 628). This galaxy is about 80,000 light years and is 30 million light years apart. Viewed face on, as it appeared about 30 million years ago, M74 is considered to be one of the most photogenic spiral galaxies in the sky. The galaxy is rich in young bright blue stars and glowing red regions of dust and molecular hydrogen where new stars are being created. M74, however, is quite camera shy - it has a low surface brightness that makes it challenging for both visual observers and astrophotographers to see it's entire form. The Chandra X - Ray observatory, discovered M74 to be the home of a super massive black hole, tucked away in one of it's outer arms. This black hole is one of the largest ever discovered and has the mass of over 10,000 suns. Thirty six, fifteen minute photographs were combined to create this picture, with a total exposure time of almost nine hours. The images were taken with a

R. Jay GaBany

PIX4609403

Detail of a doll, 1740-60 (mixed media)

Detail of a doll, 1740-60 (mixed media)

English School, (18th century)

MAN2635510

Portugal, True Colour Satellite Image. Portugal. True colour satellite image of Portugal. North is at top. Water is blue, vegetation is green and bare ground is light brown. Part of Spain is also seen. Lisbon (Lisboa), the capital of Portugal, lies on the north side of the northernmost inlet at lower left. The Atlantic Ocean is seen to the west. The image used data from LANDSAT 5 & 7 satellites ©Planet Observer/UIG/Leemage

Portugal, True Colour Satellite Image. Portugal. True colour satellite image of Portugal. North is at top. Water is blue, vegetation is green and bare ground is light brown. Part of Spain is also seen. Lisbon (Lisboa), the capital of Portugal, lies on the north side of the northernmost inlet at lower left. The Atlantic Ocean is seen to the west. The image used data from LANDSAT 5 & 7 satellites ©Planet Observer/UIG/Leemage

UIG5421019

Star Formation in Galaxy M83 - Star Birth in Spiral galaxy M83 - Close-up of star-forming zones in the arms and near the nucleus (white region on the right) of the M83 galaxy. In red appear the hydrogen clouds in which the stars are born. The new stars are concentrated in blue clusters visible by hundreds on this image. The galaxy M83 (NGC 5236) is located about 15 million light years away from Earth in the constellation Hydra. This galaxy is intermediate between a classic spiral and a barree spiral. Image obtained by the Hubble space telescope with its wide field camera 3 (WFC3) in August 2009. Nicknamed the Southern Pinwheel, M83 is undergoing more rapid star formation than our own Milky Way galaxy, especially in its nucleus. The sharp “” eye”” of the Wide Field Camera 3 (WFC3) has captured hundreds of young star clusters, ancient swarms of globular star clusters, and hundreds of thousands of individual stars, mostly blue supergiants and red supergiants. The image, taken in August 20

Star Formation in Galaxy M83 - Star Birth in Spiral galaxy M83 - Close-up of star-forming zones in the arms and near the nucleus (white region on the right) of the M83 galaxy. In red appear the hydrogen clouds in which the stars are born. The new stars are concentrated in blue clusters visible by hundreds on this image. The galaxy M83 (NGC 5236) is located about 15 million light years away from Earth in the constellation Hydra. This galaxy is intermediate between a classic spiral and a barree spiral. Image obtained by the Hubble space telescope with its wide field camera 3 (WFC3) in August 2009. Nicknamed the Southern Pinwheel, M83 is undergoing more rapid star formation than our own Milky Way galaxy, especially in its nucleus. The sharp “” eye”” of the Wide Field Camera 3 (WFC3) has captured hundreds of young star clusters, ancient swarms of globular star clusters, and hundreds of thousands of individual stars, mostly blue supergiants and red supergiants. The image, taken in August 20

PIX4612521

The infant universe, March 2006

The infant universe, March 2006

UIS5105011

March -View of the south pole - Mars South Pole: Image of the southern polar cap of Mars obtained by the Mars Express probe on December 17, 2012. The bright white region of this image shows the icy cap that covers Mars' south pole, composed of frozen water and carbon dioxide. The southern cap reaches some 3 km thick in places, and is around 350 km in diameter. This icy region is permanent; in the martian winter another, thinner ice cap forms over the top of it, stretching further out across the planet and disappearing again when the weather warms up. Mars Express imaged this area of March on 17 December 2012, in infrared, green and blue light, using its High Resolution Stereo Camera.

March -View of the south pole - Mars South Pole: Image of the southern polar cap of Mars obtained by the Mars Express probe on December 17, 2012. The bright white region of this image shows the icy cap that covers Mars' south pole, composed of frozen water and carbon dioxide. The southern cap reaches some 3 km thick in places, and is around 350 km in diameter. This icy region is permanent; in the martian winter another, thinner ice cap forms over the top of it, stretching further out across the planet and disappearing again when the weather warms up. Mars Express imaged this area of March on 17 December 2012, in infrared, green and blue light, using its High Resolution Stereo Camera.

PIX4616213

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