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Images de 'Volcanic' médias trouvés, 3,897

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Sunrise seen from the shuttle Atlantis 03/1992 - Sunrise through earth atmosphere 03/1992 - Sunrise in the atmosphere seen by the shuttle Atlantis in March 1992. Dust from the Pinatubo eruption in June 1991 is still noticeable. This sunrise was photographed from the space shuttle Atlantis in the vicinity of Pecos, Texas from an altitude of about 155 nautical miles. From this view, much of the solar energy is scattered by the residue from the Philippines's Mt. Pinatubo volcanic eruption in June 1991. The dark band of aerosols extending across the image, through which the sun is visible, consist primarily of sulfuric acid crystals that scatters the incoming sunlight

Sunrise seen from the shuttle Atlantis 03/1992 - Sunrise through earth atmosphere 03/1992 - Sunrise in the atmosphere seen by the shuttle Atlantis in March 1992. Dust from the Pinatubo eruption in June 1991 is still noticeable. This sunrise was photographed from the space shuttle Atlantis in the vicinity of Pecos, Texas from an altitude of about 155 nautical miles. From this view, much of the solar energy is scattered by the residue from the Philippines's Mt. Pinatubo volcanic eruption in June 1991. The dark band of aerosols extending across the image, through which the sun is visible, consist primarily of sulfuric acid crystals that scatters the incoming sunlight

PIX4675306

Lava lake on Io - Illustration - Lava lake on Io - Artist's view of a lava lake on the surface of Io, one of Jupiter's satellites. There are places on Io where molten lava has been observed actively welling up from beneath the surface of this otherwise frozen world. Lavas on Io were originally thought to be molten sulfur, but with caldera temperatures far exceeding 1,000o F - - too hot for liquid sulfur - - these eruptions are now thought to be primarily molten silicate rocks. In this image a dormant volcanic caldera re - awakens with a surge of new lava that breaks up and melts a frozen crust. A gibbous Jupiter hangs over the horizon

Lava lake on Io - Illustration - Lava lake on Io - Artist's view of a lava lake on the surface of Io, one of Jupiter's satellites. There are places on Io where molten lava has been observed actively welling up from beneath the surface of this otherwise frozen world. Lavas on Io were originally thought to be molten sulfur, but with caldera temperatures far exceeding 1,000o F - - too hot for liquid sulfur - - these eruptions are now thought to be primarily molten silicate rocks. In this image a dormant volcanic caldera re - awakens with a surge of new lava that breaks up and melts a frozen crust. A gibbous Jupiter hangs over the horizon

Walter B Myers

PIX4575235

The Kilimanjaro seen from space - Mt. Kilimanjaro's vanishing snow cap - Kilimanjaro, Tanzania, loses its eternal snow. 80% have already disappeared in a century. We think its glaciers will have completely disappeared by 2015.

The Kilimanjaro seen from space - Mt. Kilimanjaro's vanishing snow cap - Kilimanjaro, Tanzania, loses its eternal snow. 80% have already disappeared in a century. We think its glaciers will have completely disappeared by 2015.

PIX4659402

Onekotan volcanic island seen from space - Onekotan volcanic island seen from space - Onekotan Island is an uninhabited volcanic island north of the Kuril Islands chain (Russia). About 40 kilometres long, this island is home to two stratovolcanoes, on the right (north), the Nemo volcano, on the left (south), the Krenitsyn volcano with the caldera Tao - Rusyr. Image obtained from the International Space Station (ISS) on January 9, 2011. Snow cover highlights the calderas and volcanic cones that form the northern and southern ends of Onekotan Island, part of the Russian Federation in the western Pacific Ocean. Calderas are depressions formed when a volcano empties its magma chamber in an explosive eruption and then the overlaying material collapses into the evacuated space. In this astronaut photograph taken from the International Space Station (ISS) on January 9, 2011, the northern end of the island (image right) is dominated by the Nemo Peak volcano, which began forming within an older

Onekotan volcanic island seen from space - Onekotan volcanic island seen from space - Onekotan Island is an uninhabited volcanic island north of the Kuril Islands chain (Russia). About 40 kilometres long, this island is home to two stratovolcanoes, on the right (north), the Nemo volcano, on the left (south), the Krenitsyn volcano with the caldera Tao - Rusyr. Image obtained from the International Space Station (ISS) on January 9, 2011. Snow cover highlights the calderas and volcanic cones that form the northern and southern ends of Onekotan Island, part of the Russian Federation in the western Pacific Ocean. Calderas are depressions formed when a volcano empties its magma chamber in an explosive eruption and then the overlaying material collapses into the evacuated space. In this astronaut photograph taken from the International Space Station (ISS) on January 9, 2011, the northern end of the island (image right) is dominated by the Nemo Peak volcano, which began forming within an older

PIX4661424

Earth - The geoid - Earth's geoid - The Earth's geoid, an image of the inegalites of the Earth's gravitation field. Image centered on the Atlantic Ocean. Image obtained by the GOCE satellite in 2011. ESA's GOCE mission has delivered the most accurate model of the 'geoid' ever produced, which will be used to further our understanding of how Earth works. A precise model of Earth's geoid is crucial for deriving accurate measurements of ocean circulation, sea - level change and terrestrial ice dynamics. The geoid is also used as a reference surface from which to map the topographical features on the planet. In addition, a better understanding of variations in the gravity field will lead to a deeper understanding of Earth's interior, such as the physics and dynamics associated with volcanic activity and earthquakes

Earth - The geoid - Earth's geoid - The Earth's geoid, an image of the inegalites of the Earth's gravitation field. Image centered on the Atlantic Ocean. Image obtained by the GOCE satellite in 2011. ESA's GOCE mission has delivered the most accurate model of the 'geoid' ever produced, which will be used to further our understanding of how Earth works. A precise model of Earth's geoid is crucial for deriving accurate measurements of ocean circulation, sea - level change and terrestrial ice dynamics. The geoid is also used as a reference surface from which to map the topographical features on the planet. In addition, a better understanding of variations in the gravity field will lead to a deeper understanding of Earth's interior, such as the physics and dynamics associated with volcanic activity and earthquakes

PIX4632044

The Milky Way Over Devil's Tower - The Milky Way Over Devil's Tower - The Lactee Way from Devils Tower National Monument. Located in Wyoming, this natural monolith rises 386 metres above the surrounding land. It is the first national monument in the United States, and is also famous for being the landing site of aliens in the film Encounters of the third type. Image obtained in June 2009. The Milky Way shines above the Devils Tower in Wyoming. The mountain was the feature landmark for the alien landing in the famous 1977 movie “Close Encounters of the Third Kind””. It is also the very first American national monument. Devils Tower is a monolithic volcanic neck located in the Black Hills in northeastern Wyoming. It rises dramatically 386 m above the surrounding terrain. Image taken in June 2009

The Milky Way Over Devil's Tower - The Milky Way Over Devil's Tower - The Lactee Way from Devils Tower National Monument. Located in Wyoming, this natural monolith rises 386 metres above the surrounding land. It is the first national monument in the United States, and is also famous for being the landing site of aliens in the film Encounters of the third type. Image obtained in June 2009. The Milky Way shines above the Devils Tower in Wyoming. The mountain was the feature landmark for the alien landing in the famous 1977 movie “Close Encounters of the Third Kind””. It is also the very first American national monument. Devils Tower is a monolithic volcanic neck located in the Black Hills in northeastern Wyoming. It rises dramatically 386 m above the surrounding terrain. Image taken in June 2009

PIX4637382

Earth - The geoid - Earth's geoid - The Earth's geoid, an image of the inegalites of the Earth's gravitation field. Image centred on Indonesia. Image obtained by the GOCE satellite in 2011. ESA's GOCE mission has delivered the most accurate model of the 'geoid' ever produced, which will be used to further our understanding of how Earth works. A precise model of Earth's geoid is crucial for deriving accurate measurements of ocean circulation, sea - level change and terrestrial ice dynamics. The geoid is also used as a reference surface from which to map the topographical features on the planet. In addition, a better understanding of variations in the gravity field will lead to a deeper understanding of Earth's interior, such as the physics and dynamics associated with volcanic activity and earthquakes

Earth - The geoid - Earth's geoid - The Earth's geoid, an image of the inegalites of the Earth's gravitation field. Image centred on Indonesia. Image obtained by the GOCE satellite in 2011. ESA's GOCE mission has delivered the most accurate model of the 'geoid' ever produced, which will be used to further our understanding of how Earth works. A precise model of Earth's geoid is crucial for deriving accurate measurements of ocean circulation, sea - level change and terrestrial ice dynamics. The geoid is also used as a reference surface from which to map the topographical features on the planet. In addition, a better understanding of variations in the gravity field will lead to a deeper understanding of Earth's interior, such as the physics and dynamics associated with volcanic activity and earthquakes

PIX4632050

Volcanic ash cloud in Iceland - Volcanic ash cloud from Iceland - The volcanic ash plume caused by the eruption of the Eyjafjoell volcano (Eyjafjallajoekull) in Iceland seen by the Envisat satellite on 11 May 2010. A heavy plume of ash from Iceland's Eyjafjallajoekull volcano is visible travelling over the Atlantic in this Envisat Medium Resolution Imaging Spectrometer image acquired on 11 May 2010. The narrow shape of the ash cloud indicates a lot of wind is blowing in a southerly direction towards the west of Ireland. Also visible, the area around the Hakla volcano (east of Eyjafjallajoekull) now appears black as the snow and ice that surrounded it in April have been completely covered by ash. The volcano has been emitting steam and ash since its recent eruptions began on 20 March

Volcanic ash cloud in Iceland - Volcanic ash cloud from Iceland - The volcanic ash plume caused by the eruption of the Eyjafjoell volcano (Eyjafjallajoekull) in Iceland seen by the Envisat satellite on 11 May 2010. A heavy plume of ash from Iceland's Eyjafjallajoekull volcano is visible travelling over the Atlantic in this Envisat Medium Resolution Imaging Spectrometer image acquired on 11 May 2010. The narrow shape of the ash cloud indicates a lot of wind is blowing in a southerly direction towards the west of Ireland. Also visible, the area around the Hakla volcano (east of Eyjafjallajoekull) now appears black as the snow and ice that surrounded it in April have been completely covered by ash. The volcano has been emitting steam and ash since its recent eruptions began on 20 March

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Venus Surface - Artist View - A venusian volcanic valley - Artist view - Venus's surface looks young, about 500 million years old. Active volcanism could be the cause. Based upon analysis of the number and distribution of impact craters across the whole of Venus, the entire surface appears to be the same age: about 500 million years old. This is an astonishing result since 500 million years is young for a planet in our solar system. Like the Earth, Venus is thought to be about 4.5 billion years old. This suggests that 500 million years ago (1/9th Venus' current age) Venus completely resurfaced itself - - turned itself inside out. What caused such a cataclysmic event, or if indeed this is what really happened, remains a mystery

Venus Surface - Artist View - A venusian volcanic valley - Artist view - Venus's surface looks young, about 500 million years old. Active volcanism could be the cause. Based upon analysis of the number and distribution of impact craters across the whole of Venus, the entire surface appears to be the same age: about 500 million years old. This is an astonishing result since 500 million years is young for a planet in our solar system. Like the Earth, Venus is thought to be about 4.5 billion years old. This suggests that 500 million years ago (1/9th Venus' current age) Venus completely resurfaced itself - - turned itself inside out. What caused such a cataclysmic event, or if indeed this is what really happened, remains a mystery

Walter B Myers

PIX4635439

Clouds of Jupiter - Illustration - Jupiter's cloud tops at night - Illustration - Artist view of Jupiter's cloud summit. Above all, the Io and Europe satellites. This vantage point is from the same altitude as Jupiter's highest clouds where the atmospheric pressure is just a few millibars, about the same as that on the surface of Mars. High in the starry sky can be seen two of Jupiter's largest satellites - - volcanic Io and icy Europa. The scanty ether here gives little clue to the gargantuan pressures and tornado - force winds below. A giant lightning bolt passes between cloud layers driven by a 300 mph gale. Beneath the clouds lies a turbulent realm of molecular hydrogen and helium. Go deeper yet and this atmosphere eventually gives way to a deep, planet - wide ocean of liquid hydrogen

Clouds of Jupiter - Illustration - Jupiter's cloud tops at night - Illustration - Artist view of Jupiter's cloud summit. Above all, the Io and Europe satellites. This vantage point is from the same altitude as Jupiter's highest clouds where the atmospheric pressure is just a few millibars, about the same as that on the surface of Mars. High in the starry sky can be seen two of Jupiter's largest satellites - - volcanic Io and icy Europa. The scanty ether here gives little clue to the gargantuan pressures and tornado - force winds below. A giant lightning bolt passes between cloud layers driven by a 300 mph gale. Beneath the clouds lies a turbulent realm of molecular hydrogen and helium. Go deeper yet and this atmosphere eventually gives way to a deep, planet - wide ocean of liquid hydrogen

Walter B Myers

PIX4575008

Venus Surface - Artist View - Venus from ground level - Artist view - A visit to Venus 'surface would reveal a wasteland of vast proportions. While Venus is nearly as large as the Earth, it has over three times the land mass (most of the Earth's surface is under water). The conditions are so dry and hostile to life as we know it the surface of Venus is likely as sterile as an autoclave. Venus' surface is actually hotter than Mercury's, despite being nearly twice as far from the Sun. It is so hot that the stony venusian ground itself may be slightly plastic and emit a red glow at night. The closest the Earth comes to matching this combination of extreme pressure and temperature is in the realm of deep undersea volcanic vents

Venus Surface - Artist View - Venus from ground level - Artist view - A visit to Venus 'surface would reveal a wasteland of vast proportions. While Venus is nearly as large as the Earth, it has over three times the land mass (most of the Earth's surface is under water). The conditions are so dry and hostile to life as we know it the surface of Venus is likely as sterile as an autoclave. Venus' surface is actually hotter than Mercury's, despite being nearly twice as far from the Sun. It is so hot that the stony venusian ground itself may be slightly plastic and emit a red glow at night. The closest the Earth comes to matching this combination of extreme pressure and temperature is in the realm of deep undersea volcanic vents

Walter B Myers

PIX4635434

Jupiter and the Lactee Way on Devils Tower - Devils tower with Jupiter and the Milky way - The Lactee Way from Devils Tower National Monument. Located in Wyoming, this natural monolith rises 386 metres above the surrounding land. It is the first national monument in the United States, and is also famous for being the landing site of aliens in the film Encounters of the third type. Image obtained in June 2009. The Milky Way shines above the Devils Tower in Wyoming. The mountain was the feature landmark for the alien landing in the famous 1977 movie “Close Encounters of the Third Kind””. It is also the very first American national monument. Devils Tower is a monolithic volcanic neck located in the Black Hills in northeastern Wyoming. It rises dramatically 386 m above the surrounding terrain. Jupiter is shining at bottom left. Image taken in June 2009

Jupiter and the Lactee Way on Devils Tower - Devils tower with Jupiter and the Milky way - The Lactee Way from Devils Tower National Monument. Located in Wyoming, this natural monolith rises 386 metres above the surrounding land. It is the first national monument in the United States, and is also famous for being the landing site of aliens in the film Encounters of the third type. Image obtained in June 2009. The Milky Way shines above the Devils Tower in Wyoming. The mountain was the feature landmark for the alien landing in the famous 1977 movie “Close Encounters of the Third Kind””. It is also the very first American national monument. Devils Tower is a monolithic volcanic neck located in the Black Hills in northeastern Wyoming. It rises dramatically 386 m above the surrounding terrain. Jupiter is shining at bottom left. Image taken in June 2009

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March - Spirit - Panorama McMurdo - Detail - 10 - 2006 - March: McMurdo panorama - Spirit - Detail - 10 - 2006 - Detail of the panorama “” Mac Murdo”” obtained by the Spirit rover from April to October 2006. Spirit stayed in the same place directing its solar panels towards the Sun to recharge its batteries. Many dark, porous volcanic rocks are visible in this image. The Rover Spirit landed on Mars in the Gusev crater area on July 4, 2004. “McMurdo” panorama detail. From April through October 2006, Spirit has stayed on a small hill known as “Low Ridge.”” There, the rover's solar panels are tilted towards the sun to maintain enough solar power for Spirit to keep making scientific observations throughout the winter on southern Mars. This view of the surroundings from Spirit's “” Winter Haven”” is presented in approximately true color. Many dark, porous - textured volcanic rocks can be seen

March - Spirit - Panorama McMurdo - Detail - 10 - 2006 - March: McMurdo panorama - Spirit - Detail - 10 - 2006 - Detail of the panorama “” Mac Murdo”” obtained by the Spirit rover from April to October 2006. Spirit stayed in the same place directing its solar panels towards the Sun to recharge its batteries. Many dark, porous volcanic rocks are visible in this image. The Rover Spirit landed on Mars in the Gusev crater area on July 4, 2004. “McMurdo” panorama detail. From April through October 2006, Spirit has stayed on a small hill known as “Low Ridge.”” There, the rover's solar panels are tilted towards the sun to maintain enough solar power for Spirit to keep making scientific observations throughout the winter on southern Mars. This view of the surroundings from Spirit's “” Winter Haven”” is presented in approximately true color. Many dark, porous - textured volcanic rocks can be seen

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Volcano Llullaillaco - Volcano Llullaillaco - Llullaillaco or Llullay - Yacu is an active stratovolcano located in the Andes on the border between Argentina and Chile. This image obtained from the International Space Station on 9 December 2009 shows a vast flow of lava that extends from the volcanic cone. The summit of South America's Llullaillaco Volcano has an elevation of 6,739 meters (22,110 feet) above sea level, making it the highest historically active volcano in the world. The current stratovolcano - - a cone - shaped volcano built from successive layers of thick lava flows and eruption products like ash and rock fragments - - is built on top of an older stratovolcano. This detailed astronaut photograph of Llullaillaco illustrates an interesting volcanic feature known as a coulee (image top right). Coulees are formed from highly viscous, thick lavas that flow onto a steep surface. Image taken on December 9, 2009 from the International space station (ISS)

Volcano Llullaillaco - Volcano Llullaillaco - Llullaillaco or Llullay - Yacu is an active stratovolcano located in the Andes on the border between Argentina and Chile. This image obtained from the International Space Station on 9 December 2009 shows a vast flow of lava that extends from the volcanic cone. The summit of South America's Llullaillaco Volcano has an elevation of 6,739 meters (22,110 feet) above sea level, making it the highest historically active volcano in the world. The current stratovolcano - - a cone - shaped volcano built from successive layers of thick lava flows and eruption products like ash and rock fragments - - is built on top of an older stratovolcano. This detailed astronaut photograph of Llullaillaco illustrates an interesting volcanic feature known as a coulee (image top right). Coulees are formed from highly viscous, thick lavas that flow onto a steep surface. Image taken on December 9, 2009 from the International space station (ISS)

PIX4675790

La Palma Observatory: Telescope FACT - La Palma Observatory: The FACT telescope: FACT (First G-APD Cherenkov Telescope) is a telescope located at the Roque de los Muchachos Observatory in La Palma, Canary Islands. One of the MAGIC telescopes is visible in the background. The First G-APD Cherenkov Telescope (FACT) is the first imaging atmospheric Cherenkov telescope using Geiger-mode avalanche photodiods (G-APDs) as photo sensors. The rather small, low-cost telescope will not only serve as a test bench for this technology in Cherenkov astronomy, but also monitor bright active galactic nuclei (AGN) in the TeV energy range. Image taken at Observatorio del Roque de Los Muchachos, Canary Islands, Spain. One of the MAGIC (Major Atmospheric Gamma-ray Imaging Cherenkov Telescopes) is visible in the background. The Canary Islands are volcanic in origin and the whole observatory lies on the edge of the Taburiente volcano

La Palma Observatory: Telescope FACT - La Palma Observatory: The FACT telescope: FACT (First G-APD Cherenkov Telescope) is a telescope located at the Roque de los Muchachos Observatory in La Palma, Canary Islands. One of the MAGIC telescopes is visible in the background. The First G-APD Cherenkov Telescope (FACT) is the first imaging atmospheric Cherenkov telescope using Geiger-mode avalanche photodiods (G-APDs) as photo sensors. The rather small, low-cost telescope will not only serve as a test bench for this technology in Cherenkov astronomy, but also monitor bright active galactic nuclei (AGN) in the TeV energy range. Image taken at Observatorio del Roque de Los Muchachos, Canary Islands, Spain. One of the MAGIC (Major Atmospheric Gamma-ray Imaging Cherenkov Telescopes) is visible in the background. The Canary Islands are volcanic in origin and the whole observatory lies on the edge of the Taburiente volcano

Alex Tudorica

PIX4654590

Canary Islands - Canary Islands: Canary Islands viewed by Terra satellite on 21 December 2011 - The Canary Islands are a group of seven large islands and several smaller islets, all volcanic in origin. The eastern edge of the chain lies only 100 kilometers from the coasts of Morocco and Western Sahara, and the chain stretches for about 500 kilometers across the Atlantic. All the islands are mountainous, and Tenerife, the central island in this image is home to Pico del Teide, the highest peak, which rises 12,198 feet (3,718 meters) above sea level - From east to west, the islands are named Lanzarote, Fuerteventura, Gran Canaria, Tenerife, La Gomera, La Palmera and El Hierro. A bright swirl of peacock blue marks the ocean south of El Hierro, a stain on the sea from an ongoing eruption of a volcano under the waters

Canary Islands - Canary Islands: Canary Islands viewed by Terra satellite on 21 December 2011 - The Canary Islands are a group of seven large islands and several smaller islets, all volcanic in origin. The eastern edge of the chain lies only 100 kilometers from the coasts of Morocco and Western Sahara, and the chain stretches for about 500 kilometers across the Atlantic. All the islands are mountainous, and Tenerife, the central island in this image is home to Pico del Teide, the highest peak, which rises 12,198 feet (3,718 meters) above sea level - From east to west, the islands are named Lanzarote, Fuerteventura, Gran Canaria, Tenerife, La Gomera, La Palmera and El Hierro. A bright swirl of peacock blue marks the ocean south of El Hierro, a stain on the sea from an ongoing eruption of a volcano under the waters

PIX4658491

Aurora sur Jupiter - Aurora on Jupiter - Artist's view of an aurora boreale on Jupiter. This is how auroras on Jupiter's north pole might look from a distance of about a quarter million miles. On the Sunlit side can be seen churning clouds of ammonia ice, ammonium hydrosulfide, and water ice. The “” dark”” side reveals a dazzling aurora and brilliant flashes of lightning hundreds of times brighter than lightning on Earth. Unlike Earth's north and south pole auroras which are powered by charged particles from the Sun, auroras on Jupiter are driven by particles emitted by Jupiter's volcanic moon Io. Io in fact leaves a distinct auroral “” footprint”” on Jupiter's poles, seen here as a whitish dot with a trailing, comet - like tail at the seven 0'clock position. Jupiter's moons Europa and Ganymede also have corresponding, albeit fainter footprints on the far side of the larger auroral oval

Aurora sur Jupiter - Aurora on Jupiter - Artist's view of an aurora boreale on Jupiter. This is how auroras on Jupiter's north pole might look from a distance of about a quarter million miles. On the Sunlit side can be seen churning clouds of ammonia ice, ammonium hydrosulfide, and water ice. The “” dark”” side reveals a dazzling aurora and brilliant flashes of lightning hundreds of times brighter than lightning on Earth. Unlike Earth's north and south pole auroras which are powered by charged particles from the Sun, auroras on Jupiter are driven by particles emitted by Jupiter's volcanic moon Io. Io in fact leaves a distinct auroral “” footprint”” on Jupiter's poles, seen here as a whitish dot with a trailing, comet - like tail at the seven 0'clock position. Jupiter's moons Europa and Ganymede also have corresponding, albeit fainter footprints on the far side of the larger auroral oval

Walter B Myers

PIX4574984

Jupiter and Io seen by the New Horizons probe

Jupiter and Io seen by the New Horizons probe

PIX4574952

Satellite Sentinel - 2 - Artist's view - Artist's view of the European satellite Sentinel - 2 in orbit around the Earth. This Earth observation satellite of the European programme Copernicus observes vegetation with a resolution of 10 m to 60 m, in thirteen spectral bands ranging from visible to infrared. Sentinel - 2A was launched on June 23, 2015 and Sentinel - 2B will be launched in 2016. Sentinel - 2 carries a high - resolution multispectral optical imager to monitor changes in vegetation for Europe's environmental monitoring Copernicus programme. This mission offers key information to optimise crop yield, thus helping to improve food security. Data can be used to measure leaf area index, leaf chlorophyll and leaf water content to monitor plant growth, which is particularly important during the growing season. It will be used to generate land - cover maps, to track changes in the way land is being used and to monitor the world's forests. In addition, Sentinel-2 provides information

Satellite Sentinel - 2 - Artist's view - Artist's view of the European satellite Sentinel - 2 in orbit around the Earth. This Earth observation satellite of the European programme Copernicus observes vegetation with a resolution of 10 m to 60 m, in thirteen spectral bands ranging from visible to infrared. Sentinel - 2A was launched on June 23, 2015 and Sentinel - 2B will be launched in 2016. Sentinel - 2 carries a high - resolution multispectral optical imager to monitor changes in vegetation for Europe's environmental monitoring Copernicus programme. This mission offers key information to optimise crop yield, thus helping to improve food security. Data can be used to measure leaf area index, leaf chlorophyll and leaf water content to monitor plant growth, which is particularly important during the growing season. It will be used to generate land - cover maps, to track changes in the way land is being used and to monitor the world's forests. In addition, Sentinel-2 provides information

PIX4644423

Satellite Sentinel - 2 - Artist's view - Artist's view of the European satellite Sentinel - 2 in orbit around the Earth. This Earth observation satellite of the European programme Copernicus observes vegetation with a resolution of 10 m to 60 m, in thirteen spectral bands ranging from visible to infrared. Sentinel - 2A was launched on June 23, 2015 and Sentinel - 2B will be launched in 2016. Sentinel - 2 carries a high - resolution multispectral optical imager to monitor changes in vegetation for Europe's environmental monitoring Copernicus programme. This mission offers key information to optimise crop yield, thus helping to improve food security. Data can be used to measure leaf area index, leaf chlorophyll and leaf water content to monitor plant growth, which is particularly important during the growing season. It will be used to generate land - cover maps, to track changes in the way land is being used and to monitor the world's forests. In addition, Sentinel-2 provides information

Satellite Sentinel - 2 - Artist's view - Artist's view of the European satellite Sentinel - 2 in orbit around the Earth. This Earth observation satellite of the European programme Copernicus observes vegetation with a resolution of 10 m to 60 m, in thirteen spectral bands ranging from visible to infrared. Sentinel - 2A was launched on June 23, 2015 and Sentinel - 2B will be launched in 2016. Sentinel - 2 carries a high - resolution multispectral optical imager to monitor changes in vegetation for Europe's environmental monitoring Copernicus programme. This mission offers key information to optimise crop yield, thus helping to improve food security. Data can be used to measure leaf area index, leaf chlorophyll and leaf water content to monitor plant growth, which is particularly important during the growing season. It will be used to generate land - cover maps, to track changes in the way land is being used and to monitor the world's forests. In addition, Sentinel-2 provides information

PIX4644343

Satellite Sentinel-2 - Artist's view: Artist's view of the European Sentinel-2 satellite orbiting the Earth. This Earth observation satellite of the European programme Copernicus observes vegetation with a resolution of 10 m to 60 m, in thirteen spectral bands ranging from visible to infrared. Sentinel-2A was launched on 23 June 2015 and Sentinel-2B will be launched in 2016 - Sentinel-2 carries a high-resolution multispectral optical imager to monitor changes in vegetation for Europe's environmental monitoring Copernicus programme. This mission offers key information to optimise crop yield, thus helping to improve food security. Data can be used to measure leaf area index, leaf chlorophyll and leaf water content to monitor plant growth, which is particularly important during the growing season. It will be used to generate land-cover maps, to track changes in the way land is being used and to monitor the world's forests. In addition, Sentinel-2 provides information on pollution in lakes

Satellite Sentinel-2 - Artist's view: Artist's view of the European Sentinel-2 satellite orbiting the Earth. This Earth observation satellite of the European programme Copernicus observes vegetation with a resolution of 10 m to 60 m, in thirteen spectral bands ranging from visible to infrared. Sentinel-2A was launched on 23 June 2015 and Sentinel-2B will be launched in 2016 - Sentinel-2 carries a high-resolution multispectral optical imager to monitor changes in vegetation for Europe's environmental monitoring Copernicus programme. This mission offers key information to optimise crop yield, thus helping to improve food security. Data can be used to measure leaf area index, leaf chlorophyll and leaf water content to monitor plant growth, which is particularly important during the growing season. It will be used to generate land-cover maps, to track changes in the way land is being used and to monitor the world's forests. In addition, Sentinel-2 provides information on pollution in lakes

PIX4644364

Ol Doinyo Lengai - Volcano Ol Doinyo Lengai - Ol Doinyo Lengai Volcano is an active volcano located in Tanzania in the Great Rift Valley. Ol Doinyo Lengai is the only volcano in the world to emit carbonatite. Image obtained from the EO-1 satellite on 12 September 2009. Volcano Ol Doinyo Lengai is an active volcano located in Tanzania in the great rift valley. It is the only known volcano producing carbonatite. The lava of Ol Doinyo Lengai is extremely cool (500 - 600* C, compared to 1,160* C for typical basaltic lava) and relatively fluid. Ol Doinyo Lengai alternates between eruptions of liquid lava that form lava lakes and fountains (called effusive eruptions) and explosive eruptions that build large cinder and ash cones. The new cone and crater are clearly visible in the center of the image acquired by satellite EO-1 on September 12, 2009. The dark spot in the crater may be fresh lava erupted from a new volcanic vent. Gray ash covers the volcano and much of the surrounding landscape

Ol Doinyo Lengai - Volcano Ol Doinyo Lengai - Ol Doinyo Lengai Volcano is an active volcano located in Tanzania in the Great Rift Valley. Ol Doinyo Lengai is the only volcano in the world to emit carbonatite. Image obtained from the EO-1 satellite on 12 September 2009. Volcano Ol Doinyo Lengai is an active volcano located in Tanzania in the great rift valley. It is the only known volcano producing carbonatite. The lava of Ol Doinyo Lengai is extremely cool (500 - 600* C, compared to 1,160* C for typical basaltic lava) and relatively fluid. Ol Doinyo Lengai alternates between eruptions of liquid lava that form lava lakes and fountains (called effusive eruptions) and explosive eruptions that build large cinder and ash cones. The new cone and crater are clearly visible in the center of the image acquired by satellite EO-1 on September 12, 2009. The dark spot in the crater may be fresh lava erupted from a new volcanic vent. Gray ash covers the volcano and much of the surrounding landscape

PIX4659350

March: chaotic terrain between Kasei Valles and Sacra Fossae - Mars: Chaotic terrain between Kasei Valles and Sacra Fossae - Region bordering Kasei Valles and Sacra Fossae. To the north, the large impact crater is 35 km in diameter. The image covering an area of 225 km by 95 km was obtained by the Mars Express probe. Mars Express flew over the boundary between Kasei Valles and Sacra Fossae and imaged the region, acquiring spectacular views of the chaotic terrain in the area. The images are centred at 12* N/285* E and have a ground resolution of about 21 m/pixel. They cover 225 x 95 km or 21.375 sq km, an area roughly half the size of the Netherlands. The image shows an old 35 km - diameter impact crater in the north. The crater's southwestern rim is eroded strongly, mostly by flowing water. The source of the water was located in Etus Chasma, which lies about 850 km to the southwest. The crater floor and the northwestern part are remarkably flat, formed by sediments and basaltic lava fl

March: chaotic terrain between Kasei Valles and Sacra Fossae - Mars: Chaotic terrain between Kasei Valles and Sacra Fossae - Region bordering Kasei Valles and Sacra Fossae. To the north, the large impact crater is 35 km in diameter. The image covering an area of 225 km by 95 km was obtained by the Mars Express probe. Mars Express flew over the boundary between Kasei Valles and Sacra Fossae and imaged the region, acquiring spectacular views of the chaotic terrain in the area. The images are centred at 12* N/285* E and have a ground resolution of about 21 m/pixel. They cover 225 x 95 km or 21.375 sq km, an area roughly half the size of the Netherlands. The image shows an old 35 km - diameter impact crater in the north. The crater's southwestern rim is eroded strongly, mostly by flowing water. The source of the water was located in Etus Chasma, which lies about 850 km to the southwest. The crater floor and the northwestern part are remarkably flat, formed by sediments and basaltic lava fl

PIX4616176

Comparison between Earth and Venus - Earth and Venus compared - Comparison at the scale of the sizes of Earth and Venus, seen here without their atmosphere. The size of the Venus planet is roughly the same as that of the Earth. This to-scale image suggests how the Earth and Venus might appear without their atmospheres. Venus' diameter is 86% that of the Earth's. It has 82% the mass. If you weigh 180 pounds on the Earth, you would weigh 163 pounds on Venus. Venus is about three-quarters the Earth's distance from the Sun. While Venus is roughly the same size and density as the Earth, it is otherwise a very different world. Earth's surface is a varied one, with liquid water covering three quarters of its surface. Those areas not under water have been highly modified by plate tectonics, weather, and life itself. Venus on the other hand is far too hot to host liquid water. Volcanoes, massive lava flows and the occasional impact crater characterize its surface. Latest observations suggest th

Comparison between Earth and Venus - Earth and Venus compared - Comparison at the scale of the sizes of Earth and Venus, seen here without their atmosphere. The size of the Venus planet is roughly the same as that of the Earth. This to-scale image suggests how the Earth and Venus might appear without their atmospheres. Venus' diameter is 86% that of the Earth's. It has 82% the mass. If you weigh 180 pounds on the Earth, you would weigh 163 pounds on Venus. Venus is about three-quarters the Earth's distance from the Sun. While Venus is roughly the same size and density as the Earth, it is otherwise a very different world. Earth's surface is a varied one, with liquid water covering three quarters of its surface. Those areas not under water have been highly modified by plate tectonics, weather, and life itself. Venus on the other hand is far too hot to host liquid water. Volcanoes, massive lava flows and the occasional impact crater characterize its surface. Latest observations suggest th

Walter B Myers

PIX4629857

Galapagos Islands - The Galapagos Islands seen from the space shuttle - Galapagos Islands (Isabela, the largest, Fernandina, San Salvador and part of Santa Cruz) seen by the space shuttle Endeavour in May 1996. The Galapagos Islands seen from the space shuttle Endeavour in May 1996. Isabela, the largest of the Galapagos Islands; Fernandina; San Salvador; and a partial view of Santa Cruz, are apparent in this southwest - looking, low - oblique photograph. Located on the equator 600 miles (1000 kilometers) west of Ecuador, the rugged volcanic islands began forming 4 to 5 million years ago. Sea - horse - shaped Isabela Island covers 1771 square miles (4588 square kilometers) and has five active volcanoes. Fernandina Island, west - southwest of Isabela, covers 248 square miles (642 square kilometers) and has a single large active volcano with a very distinct caldera that is sometimes filled with water. East - northeast of Isabella lies San Salvador that covers 226 square miles (585 square

Galapagos Islands - The Galapagos Islands seen from the space shuttle - Galapagos Islands (Isabela, the largest, Fernandina, San Salvador and part of Santa Cruz) seen by the space shuttle Endeavour in May 1996. The Galapagos Islands seen from the space shuttle Endeavour in May 1996. Isabela, the largest of the Galapagos Islands; Fernandina; San Salvador; and a partial view of Santa Cruz, are apparent in this southwest - looking, low - oblique photograph. Located on the equator 600 miles (1000 kilometers) west of Ecuador, the rugged volcanic islands began forming 4 to 5 million years ago. Sea - horse - shaped Isabela Island covers 1771 square miles (4588 square kilometers) and has five active volcanoes. Fernandina Island, west - southwest of Isabela, covers 248 square miles (642 square kilometers) and has a single large active volcano with a very distinct caldera that is sometimes filled with water. East - northeast of Isabella lies San Salvador that covers 226 square miles (585 square

PIX4676441

Africa by satellite. Volcano Virunga - Zaire - 01/07/1993 This is a false - color radar image of Central Africa, showing the Virunga Volcano chain along the borders of Rwanda, Zaire and Uganda. This area is home to the endangered mountain gorillas. This C - and L - band image was acquired on April 12, 1994, on orbit 58 of space shuttle Endeavour by the Spaceborne Imaging Radar - C/X - band Synthetic Aperture Radar (SIR - C/X - SAR). The area is centered at about 1.75 degrees south latitude and 29.5 degrees east longitude. The image covers an area 58 kilometers by 178 kilometers (48 miles by 178 miles). The false - color composite is created by displaying the L - band HH return in red, the L - band HV return in green and the C - band HH return in blue. The dark area in the bottom of the image is Lake Kivu, which forms the border between Zaire (to the left) and Rwanda (to the right). The airport at Goma, Zaire is shown as a dark line just above the lake in the bottom left corner of the i

Africa by satellite. Volcano Virunga - Zaire - 01/07/1993 This is a false - color radar image of Central Africa, showing the Virunga Volcano chain along the borders of Rwanda, Zaire and Uganda. This area is home to the endangered mountain gorillas. This C - and L - band image was acquired on April 12, 1994, on orbit 58 of space shuttle Endeavour by the Spaceborne Imaging Radar - C/X - band Synthetic Aperture Radar (SIR - C/X - SAR). The area is centered at about 1.75 degrees south latitude and 29.5 degrees east longitude. The image covers an area 58 kilometers by 178 kilometers (48 miles by 178 miles). The false - color composite is created by displaying the L - band HH return in red, the L - band HV return in green and the C - band HH return in blue. The dark area in the bottom of the image is Lake Kivu, which forms the border between Zaire (to the left) and Rwanda (to the right). The airport at Goma, Zaire is shown as a dark line just above the lake in the bottom left corner of the i

PIX4659192

The Earth 650 million years ago - Artist's view - Snowball Earth - The Earth seen in a period of glaciation (Varanger glaciation), about 650 to 630 million years ago. This is how the Earth may have appeared about 650 million years ago during a period when snow and ice may have covered most, if not all, of the Earth's surface and oceans. This image suggests the Earth's appearance during the Marinoan glaciation from 650 to 630 million years ago. The southern and eastern hemispheres are dominated by glacier - covered land masses while the opposing hemisphere is frozen ocean save for a few areas of exposed liquid water, AKA refugia for the Earth's surviving soft - bodied multicellular organisms. In addition to the Marinoan glaciation there may have been at least two, and possibly three previous Proterozoic glacial periods going back to two billion years ago. The causes of these snowball periods are unknown but may have been due to massive volcanic eruptions, massive meteoritic impacts (bot

The Earth 650 million years ago - Artist's view - Snowball Earth - The Earth seen in a period of glaciation (Varanger glaciation), about 650 to 630 million years ago. This is how the Earth may have appeared about 650 million years ago during a period when snow and ice may have covered most, if not all, of the Earth's surface and oceans. This image suggests the Earth's appearance during the Marinoan glaciation from 650 to 630 million years ago. The southern and eastern hemispheres are dominated by glacier - covered land masses while the opposing hemisphere is frozen ocean save for a few areas of exposed liquid water, AKA refugia for the Earth's surviving soft - bodied multicellular organisms. In addition to the Marinoan glaciation there may have been at least two, and possibly three previous Proterozoic glacial periods going back to two billion years ago. The causes of these snowball periods are unknown but may have been due to massive volcanic eruptions, massive meteoritic impacts (bot

Walter B Myers

PIX4633276

March - Spirit - Panorama McMurdo 10 - 2006 - March: McMurdo panorama - Spirit 10 - 2006 - Panorama of 360 degres “” Mac Murdo”” obtained by the Spirit rover from April to October 2006. Spirit stayed in the same place directing its solar panels towards the Sun to recharge its batteries. Many dark, porous volcanic rocks are visible in this image. The Rover Spirit landed on Mars in the Gusev crater area on July 4, 2004. This 360 - degree view, called the “” McMurdo”” panorama, comes from the panoramic camera (Pancam) on Nasa's Mars Exploration Rover Spirit. From April through October 2006, Spirit has stayed on a small hill known as “Low Ridge.”” There, the rover's solar panels are tilted towards the sun to maintain enough solar power for Spirit to keep making scientific observations throughout the winter on southern Mars. This view of the surroundings from Spirit's “” Winter Haven”” is presented in approximately true color. Many dark, porous - textured volcanic rocks can be seen around t

March - Spirit - Panorama McMurdo 10 - 2006 - March: McMurdo panorama - Spirit 10 - 2006 - Panorama of 360 degres “” Mac Murdo”” obtained by the Spirit rover from April to October 2006. Spirit stayed in the same place directing its solar panels towards the Sun to recharge its batteries. Many dark, porous volcanic rocks are visible in this image. The Rover Spirit landed on Mars in the Gusev crater area on July 4, 2004. This 360 - degree view, called the “” McMurdo”” panorama, comes from the panoramic camera (Pancam) on Nasa's Mars Exploration Rover Spirit. From April through October 2006, Spirit has stayed on a small hill known as “Low Ridge.”” There, the rover's solar panels are tilted towards the sun to maintain enough solar power for Spirit to keep making scientific observations throughout the winter on southern Mars. This view of the surroundings from Spirit's “” Winter Haven”” is presented in approximately true color. Many dark, porous - textured volcanic rocks can be seen around t

PIX4615739

Shikotan island seen from space - Shikotan island seen from space - Shikotan island (Shikotan) is one of the largest islands of the Kuril archipelago, located in the Pacific Ocean between the Kamchatka Peninsula and northern Japan. In this image obtained by the EO-1 satellite on 14 February 2011, this volcanic island is surrounded by ice forming spirals in the wind. Ostrov Shikotan (or Shikotan - to) is a volcanic island at the southern end of the Kuril chain. Shikotan lies along the extreme southern edge of winter sea ice in the Northern Hemisphere. The Advanced Land Imager (ALI) on NASA's Earth Observing - 1 (EO - 1) satellite captured this natural - color image of Shikotan on February 14, 2011. The island is surrounded by sea ice - - swirling shapes of ghostly blue - gray. The ice in this image may have formed in a matter of several days, and it is prone to moving with currents. North of the western end of Shikotan, eddies have shaped the ice into rough circles. The eddies may resul

Shikotan island seen from space - Shikotan island seen from space - Shikotan island (Shikotan) is one of the largest islands of the Kuril archipelago, located in the Pacific Ocean between the Kamchatka Peninsula and northern Japan. In this image obtained by the EO-1 satellite on 14 February 2011, this volcanic island is surrounded by ice forming spirals in the wind. Ostrov Shikotan (or Shikotan - to) is a volcanic island at the southern end of the Kuril chain. Shikotan lies along the extreme southern edge of winter sea ice in the Northern Hemisphere. The Advanced Land Imager (ALI) on NASA's Earth Observing - 1 (EO - 1) satellite captured this natural - color image of Shikotan on February 14, 2011. The island is surrounded by sea ice - - swirling shapes of ghostly blue - gray. The ice in this image may have formed in a matter of several days, and it is prone to moving with currents. North of the western end of Shikotan, eddies have shaped the ice into rough circles. The eddies may resul

PIX4661440

The First Life Forms on Earth - Eoarchean Earth - 3.8 billion years ago, 770 million years after the formation of the Earth, the first life forms appeared as a unicellular organism. Bacteries and archeobacteries (archaea) began to populate the Earth's surface while the atmosphere was still filled with volcanic gases and probably without oxygen. In this illustration, these micro-organisms came out of the ocean to attach themselves to the rock remains of a caldera, bringing colour to this monochrome landscape. 770 million years after the formation of the Earth - - 3.8 billion years ago - - the first life may have appeared in the form of simple, single - celled organisms. Bacteria and archaea may have even found a way to populate the otherwise sterile and inhospitable surface. The atmosphere would likely have consisted solely of gases vented by volcanoes: carbon dioxide, carbon monoxide, sulfur dioxide, nitrogen, methane, hydrogen, methane, ammonia, and water vapor. In this image, a varie

The First Life Forms on Earth - Eoarchean Earth - 3.8 billion years ago, 770 million years after the formation of the Earth, the first life forms appeared as a unicellular organism. Bacteries and archeobacteries (archaea) began to populate the Earth's surface while the atmosphere was still filled with volcanic gases and probably without oxygen. In this illustration, these micro-organisms came out of the ocean to attach themselves to the rock remains of a caldera, bringing colour to this monochrome landscape. 770 million years after the formation of the Earth - - 3.8 billion years ago - - the first life may have appeared in the form of simple, single - celled organisms. Bacteria and archaea may have even found a way to populate the otherwise sterile and inhospitable surface. The atmosphere would likely have consisted solely of gases vented by volcanoes: carbon dioxide, carbon monoxide, sulfur dioxide, nitrogen, methane, hydrogen, methane, ammonia, and water vapor. In this image, a varie

Walter B Myers

PIX4632742

Eruption New Guinea, 1878 (engraving)

Eruption New Guinea, 1878 (engraving)

Chris Hellier

HLR5891735

Volcano Hibok-Hibok Erupts In Philippines 1951

Volcano Hibok-Hibok Erupts In Philippines 1951

BOF6283665

Lake Orumieh in Iran seen from space - Lake Urmia in Iran seen from space - Lake Orumieh is the largest lake in Iran. This dirty lake is a UNESCO biosphere reserve. Image obtained from the International Space Station (ISS) on 23 August 2002. Lake Urmia is an isolated lake in Azerbaijan Province in northwest Iran. The total area of the lake is 1815 square miles (4700 square kilometers), and the north - south length is about 90 miles (145 kilometers). The maximum depth of the shallow, saline lake is approximately 50 feet (15 meters). Climatically, the lake region is located in a semiarid, almost desert environment, with general precipitation averaging 12 inches (30 centimeters) per year. Topographically, the entire region is either plateau or mountain. The surface of the lake is approximately 4100 feet (1250 meters) above sea level with several of the individual volcanic peaks reaching more than 7000 feet (2134 meters) above sea level. The massive, rugged mountain range west of the lake

Lake Orumieh in Iran seen from space - Lake Urmia in Iran seen from space - Lake Orumieh is the largest lake in Iran. This dirty lake is a UNESCO biosphere reserve. Image obtained from the International Space Station (ISS) on 23 August 2002. Lake Urmia is an isolated lake in Azerbaijan Province in northwest Iran. The total area of the lake is 1815 square miles (4700 square kilometers), and the north - south length is about 90 miles (145 kilometers). The maximum depth of the shallow, saline lake is approximately 50 feet (15 meters). Climatically, the lake region is located in a semiarid, almost desert environment, with general precipitation averaging 12 inches (30 centimeters) per year. Topographically, the entire region is either plateau or mountain. The surface of the lake is approximately 4100 feet (1250 meters) above sea level with several of the individual volcanic peaks reaching more than 7000 feet (2134 meters) above sea level. The massive, rugged mountain range west of the lake

PIX4660548

March: Hebes Chasma - Mars: Hebes Chasma - Hebes Chasma is a basin of almost 8000 m deep located in the northern part of Valles Marineris, the great Martian canyon. At the centre of this depression is a stratified plateau that constitutes sedimentary deposits. Image obtained by the Mars Express probe in 2005. View of Hebes Chasma obtained by the High Resolution Stereo Camera (HRSC) on ESA's Mars Express spacecraft. Hebes Chasma is an enclosed trough, almost 8000 m deep, in Valles Marineris, the Grand Canyon of Mars. A mesa - like mountain is located in the center of Hebes Chasma. It reaches 8000 meters above the graben floor and extends almost to the top of the surrounding plain. The mountain is made up by numerous stacked rock layers. The layering may consists of remnants of the older plateau, lake sediments, wind blown sediments or volcanic rock. The rock layers were exposed by erosional processes. Newest data acquired by the OMEGA spectrometer on - board Mars Express revealed hydrat

March: Hebes Chasma - Mars: Hebes Chasma - Hebes Chasma is a basin of almost 8000 m deep located in the northern part of Valles Marineris, the great Martian canyon. At the centre of this depression is a stratified plateau that constitutes sedimentary deposits. Image obtained by the Mars Express probe in 2005. View of Hebes Chasma obtained by the High Resolution Stereo Camera (HRSC) on ESA's Mars Express spacecraft. Hebes Chasma is an enclosed trough, almost 8000 m deep, in Valles Marineris, the Grand Canyon of Mars. A mesa - like mountain is located in the center of Hebes Chasma. It reaches 8000 meters above the graben floor and extends almost to the top of the surrounding plain. The mountain is made up by numerous stacked rock layers. The layering may consists of remnants of the older plateau, lake sediments, wind blown sediments or volcanic rock. The rock layers were exposed by erosional processes. Newest data acquired by the OMEGA spectrometer on - board Mars Express revealed hydrat

PIX4616152

Volcanic Eruption, Arenal, Costa Rica (photo)

Volcanic Eruption, Arenal, Costa Rica (photo)

XRH1066177

Eruption of Mt. Vesuvius, 1751

Eruption of Mt. Vesuvius, 1751

BL3266931

Eruption of Mt. Vesuvius, 1767

Eruption of Mt. Vesuvius, 1767

BL3266934

Size comparison: Earth, Moon and Galilean satellites - Jupiter's four largest satellites and Earth and the Moon compared - Jupiter's four largest satellites, called Galilean satellites, compared to Earth and Moon. At the top, from left to right, in order of their distance to the planet Jupiter, we find Io, Europe, Ganymede and Callisto. Ganymede is the largest satellite in the solar system. Jupiter's four largest satellites, also known as the “” Galilean”” satellites since they were first observed by the Italian astronomer Galileo over 400 years ago, are worlds in their own right. Top row, left to right, in order from their distances from Jupiter, are: Io, Europa, Ganymede, Callisto Io is the most volcanic world in the Solar System, resurfacing itself continually with extremely hot and massive eruptions that spew material over 200 miles into space. Europa is about the same size as Earth's Moon, however unlike the Moon which is made up mostly of dry silicate materials, Europa is believe

Size comparison: Earth, Moon and Galilean satellites - Jupiter's four largest satellites and Earth and the Moon compared - Jupiter's four largest satellites, called Galilean satellites, compared to Earth and Moon. At the top, from left to right, in order of their distance to the planet Jupiter, we find Io, Europe, Ganymede and Callisto. Ganymede is the largest satellite in the solar system. Jupiter's four largest satellites, also known as the “” Galilean”” satellites since they were first observed by the Italian astronomer Galileo over 400 years ago, are worlds in their own right. Top row, left to right, in order from their distances from Jupiter, are: Io, Europa, Ganymede, Callisto Io is the most volcanic world in the Solar System, resurfacing itself continually with extremely hot and massive eruptions that spew material over 200 miles into space. Europa is about the same size as Earth's Moon, however unlike the Moon which is made up mostly of dry silicate materials, Europa is believe

Walter B Myers

PIX4629924

Volcanic landscapes in Western Iceland

Volcanic landscapes in Western Iceland

UIG3119990

Volcanic landscapes in Western Iceland

Volcanic landscapes in Western Iceland

UIG3119991

Volcanic landscapes in Western Iceland

Volcanic landscapes in Western Iceland

UIG3120008

Volcanic landscapes in Western Iceland

Volcanic landscapes in Western Iceland

UIG3120009

Volcanic landscapes in Western Iceland

Volcanic landscapes in Western Iceland

UIG3120012

Volcanic landscapes in Western Iceland

Volcanic landscapes in Western Iceland

UIG3120014

Volcanic landscapes in Western Iceland

Volcanic landscapes in Western Iceland

UIG3120084

A landslide of sand precipitates in the direction of the Vesuvian Observatory.

A landslide of sand precipitates in the direction of the Vesuvian Observatory.

Unknown photographer, (20th century)

FAF3560280

DOH; The First Steps,3.6 million years old, footprints in wet volcanic ash, discovere…, 2004 (photo)

premium — DOH; The First Steps,3.6 million years old, footprints in wet volcanic ash, discovere…, 2004 (photo)

DOH; The First Steps,3.6 million years old, footprints in wet volcanic ash, discovere…, 2004 (photo)

Garrett, Kenneth

KGA8774072

Mount Vesuvius

BL3276956

Volcanic landscapes in Western Iceland

Volcanic landscapes in Western Iceland

UIG3120005

Volcanic landscapes in Western Iceland

Volcanic landscapes in Western Iceland

UIG3120013

Volcanic landscapes in Western Iceland

Volcanic landscapes in Western Iceland

UIG3120078

Mt. Vesuvius' terrible eruption, 1776

Mt. Vesuvius' terrible eruption, 1776

Fabris, Pietro (fl.1768-78)

BL3266924

Eruption of Mt. Vesuvius, 1737

Eruption of Mt. Vesuvius, 1737

BL3266926

DOH; The First Steps,3.6 million years old, footprints in wet volcanic ash, discovere…, 2008 (photo)

premium — DOH; The First Steps,3.6 million years old, footprints in wet volcanic ash, discovere…, 2008 (photo)

DOH; The First Steps,3.6 million years old, footprints in wet volcanic ash, discovere…, 2008 (photo)

Garrett, Kenneth

KGA8774068

DOH; The First Steps,3.6 million years old, footprints in wet volcanic ash, discovere…, 2008 (photo)

premium — DOH; The First Steps,3.6 million years old, footprints in wet volcanic ash, discovere…, 2008 (photo)

DOH; The First Steps,3.6 million years old, footprints in wet volcanic ash, discovere…, 2008 (photo)

Garrett, Kenneth

KGA8774070

Lava flow on Mt. Vesuvius, 1771

Lava flow on Mt. Vesuvius, 1771

BL3266932

The interior of the earth.

The interior of the earth.

UIG5307554

Volcanic landscapes in Western Iceland

Volcanic landscapes in Western Iceland

UIG3119988

Volcanic landscapes in Western Iceland

Volcanic landscapes in Western Iceland

UIG3120004

Volcanic landscapes in Western Iceland

Volcanic landscapes in Western Iceland

UIG3120016

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