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Floating free

FLOATING FREE: A space suit floats freely away from the International Space Station in a scene reminiscent of a sci-fi movie. But this time, no investigation is needed. The suit is actually the world's latest satellite and was launched on February 3, 2006. Dubbed SuitSat-1, the unneeded Russian Orlan spacesuit filled mostly with old clothes was fitted with a radio transmitter and released to orbit the Earth.

A space suit floats freely away from the International Space Station in a scene reminiscent of a sci-fi movie. But this time, no investigation is needed. The suit is actually the world's latest satellite and was launched on February 3, 2006. Dubbed SuitSat-1, the unneeded Russian Orlan spacesuit filled mostly with old clothes was fitted with a radio transmitter and released to orbit the Earth.

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Image and caption courtesy of NASA’s Image of the Day Gallery. Credit: NASA.

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This simulated natural colo...
Coco River, Nicaragua and Honduras
In this image, we see blue silt off the southern coast of Louisiana as the Mississippi River flows off into the Gulf of Mexico. The brightness and shade of blue depends on the density of the silt and the depth of the silt-carrying currents in the water. The small bright dots in the scene are fishing boats and oil platforms.
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Louisiana silt
Earth and its Moon are nicely framed in this image taken from the aft windows of the Space Shuttle Discovery in 1998. Discovery, on mission STS-95, was flying over the Atlantic Ocean at the time this image was taken.
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Nicknamed “Dragon Lake,” this body of water is formed by the Bratskove Reservoir, built along the Angara River in southern Siberia, near the city of Bratsk. This image was acquired in winter, when the lake is frozen. This image was acquired by the Landsat satellite on December 19, 1999. This is a natural color composite image made using blue, green and red wavelengths.
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Dragon Lake, Siberia
Dragon Lake, Siberia
On the edge of the Kalahari Desert in Namibia, sand dunes are encroaching onto once-fertile lands in the north. Healthy vegetation appears red in this image; in the center, notice the lone red dot. It is the result of a center-pivot irrigation system, evidence that at least one optimistic farmer continues to work the fields despite the approaching sand. This image was acquired by the Landsat 7 satellite on August 14, 2000. This is a false-color composite image made using near infrared, red and green wavelengths. The image has also been sharpened using the sensor's panchromatic band.
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"The Optimist," Kalahari De...
'The Optimist,' Kalahari Desert, Namibia
NASA's Landsat 8 satellite captured water mixing between Georgia's ick-colored Suwannee River and the deep blue Gulf of Mexico.
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Suwannee blackwater river meets the sea
Small, blocky shapes of towns, fields, and pastures surround the graceful swirls and whorls of the Mississippi River. Countless oxbow lakes and cutoffs accompany the meandering river south of Memphis, Tennessee, on the border between Arkansas and Mississippi, USA. The 'mighty Mississippi' is the largest river system in North America. Image taken by Landsat 7 on May 28, 2003.
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MEANDERING MISSISSIPPI: Sma...
Meandering Mississippi
Earth's city lights as seen from space. The brightest areas of the Earth are the most urbanized, but not necessarily the most populated. More than a century after the invention of the electric light, many parts of the planet remain thinly populated and unlit. Image created with data from the Defense Meteorological Satellite Program Operational Linescan System.
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NIGHT LIGHTS: Earth's city ...
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This simulated natural-color image shows the North and South Malosmadulu Atolls in the Maldives, an island republic in the northern Indian Ocean, southwest of India. The Maldives consists of a chain of almost 1200 small coral islands that are grouped into clusters of atolls. It is home to about a third of a million people. Arguably the lowest-lying country in the world, the average elevation is 1 meter (3.3 feet) above sea level. Waves triggered by the great tsunami of December 2004 spilled over sea walls to flood the capital with sandy water and then swept out just as suddenly. Residents fear this was a foreboding of disasters to come from sea level rise due to global warming. The image was taken on 22 December 2002, and covers an area of 51 x 90 kilometers (32 x 56 miles).
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The Maldives
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This spectacular 'blue marble' image is the most detailed true-color image of the entire Earth to date. Using a collection of satellite-based observations, scientists and visualizers stitched together months of observations of the land surface, oceans, sea ice, and clouds into a seamless, true-color mosaic of every square kilometer (0.4 square miles) of our planet. Much of the information contained in this image came from NASA’s Moderate Resolution Imaging Spectroradiometer (MODIS) onboard the Terra satellite. Visualization date: August 2, 2002.
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BLUE MARBLE: This spectacul...
Blue marble
This false-color image shows snow-capped peaks and ridges of the eastern Himalayas between major rivers in southwest China. The Himalayas are made up of three parallel mountain ranges that together stretch for more than 1800 miles (2,900 kilometers). This particular image was taken by NASA’s Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), flying aboard the Terra satellite, on February 27, 2002. The picture is a composite made by combining near-infrared, red and green wavelengths.
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Himalayas
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February 12, 1984: Mission specialist Bruce McCandless II ventures further away from the confines and safety of his ship than any previous astronaut has ever been. This space first was made possible by the Manned Manuevering Unit or MMU, a nitrogen jet-propelled backpack. After a series of test maneuvers inside and above Challenger's payload bay, McCandless went 'free-flying' to a distance of 320 feet away from the Orbiter. This stunning orbital panorama view shows McCandless out there amongst the black and blue of Earth and space.
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TO BOLDLY GO: February 12, ...
To boldly go
Phytoplankton bloom off western Iceland; 24 June, 2010. Taken by NASA's Aqua satellite.
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Phytoplankton bloom off wes...
Phytoplankton bloom
This image, showing tidal flats and channels on Long Island, in the Bahamas, was taken by an Expedition 26 crew member onboard the International Space Station. The islands of the Bahamas in the Caribbean Sea are situated on large platforms made mainly from carbonate sediments ringed by fringing reefs — the islands themselves are only the parts of the platform currently exposed above sea level. The sediments are formed mostly from the skeletal remains of organisms settling to the sea floor; over geologic time, these sediments will consolidate to form carbonate sedimentary rocks such as limestone. Darker blue shows deeper water, while light blue-green shows shallow water on the tidal flat. The continually exposed parts of the island are seen in brown, a result of soil formation and vegetation growth (left).
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This image, showing tidal f...
Long Island, Bahamas
Like distant galaxies amid clouds of interstellar dust, chunks of sea ice drift through graceful swirls of grease ice in the frigid waters of Foxe Basin in the Canadian Arctic.
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Ice Stars
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The Sierra de Velasco Mountains dominate this image in northern Argentina. The Catamarca province is in the northern part of the image, and the La Rioja province is to the south. The streams are fed by runoff from the snow in the Andes Mountains to the north. These intermittent streams can dry up rapidly. The larger urban area near the bottom of the image is La Rioja, the capital of the province of La Rioja. This image was acquired by the Landsat 5 satellite on February 28, 1985.
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Argentina
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In an area north of the city of Al-Basrah, Iraq, which borders Iran, a former wetland has been drained and walled off. Now littered with minefields and gun emplacements, it is a staging area for military exercises. This false-color composite image was made using near-infrared, red and green wavelengths of light. Taken by Landsat 7 on January 24, 2001.
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WALLED OFF: In an area nort...
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Lake Chad, Africa; February 7 and 11, 2004. Once serving as part of the floor for a much larger Lake Chad, the area now known as the Bodele Depression, located at the southern edge of the Sahara Desert in north central Africa, is slowly being transformed into a desert landscape. In the mid-1960s, Lake Chad was about the size of Lake Erie. But persistent drought conditions, coupled with increased demand for freshwater for irrigation, have reduced Lake Chad to about 5 percent of its former size. As the waters receded, the silts and sediments resting on the lakebed were left to dry in the scorching African sun. The small grains of the silty sand are easily swept up by the strong wind gusts that occasionally blow over the region. Once heaved aloft, the dust can be carried for hundreds or even thousands of kilometers. The remnants of Lake Chad appear in olive-green amid the tan and light brown hues of the surrounding landscape where the countries of Chad, Niger, Nigeria and Cameroon all share borders. The Bodele Depression was the source of some very impressive dust storms that swept over West Africa and the Cape Verde Islands in February 2004, the date of this image.
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Lake Chad, Africa; February...
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This image, taken on 4 July 2002, shows spiraling eddies known as von Karman vortices over Alaska’s Aleutian Islands. Such eddies form as air flows over and around objects in its path. In this case, these eddies were created when prevailing winds sweeping east across the northern Pacific Ocean encountered Alaska’s Aleutian Islands.
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Extraordinary Eddies
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The first television picture of Earth from space. Image taken by TIROS 1 on April 1, 1960.
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This beautiful image, taken on 11 January 2001, shows a geological formation in the Maur Adrar Desert in Mauritania, Africa. Known as the "Richat Structure," this snail-shell-like formation was created when a volcanic dome hardened and gradually eroded, exposing onion-like layers of rock.
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These cloud formations were seen over the western Aleutian Islands. Their color variations are probably due to differences in temperature and in the size of water droplets that make up the clouds. This image was acquired by the Landsat 7 satellite on June 16, 2000.
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Aleutian clouds
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Guinea-Bissau is a small country in West Africa. Complex patterns can be seen in the shallow waters along its coastline, where silt carried by the Geba and other rivers washes out into the Atlantic Ocean. Image taken by Landsat 7 on December 1, 2000.
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GUINEA-BISSAU COAST: Guinea...
Guinea-Bissau coast
Dagze Co (Lake) is one of many inland lakes in Tibet. In glacial times, the region was considerably wetter, and lakes were correspondingly much larger. This is evident by the numerous fossil shorelines that circle the lake, and attest to the presence of a larger, deeper lake. Changes in climate have resulted in greater aridity of the Tibetan Plateau, and drying up of the lakes. Image taken by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on October 8, 2001.
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Tibetan depths
This photo, taken on 30 December 2010, shows the aft section of the International Space Station (ISS). It was taken by an Expedition 26 crew member from a window in the ISS Progress 40 supply vehicle docked to the Pirs Docking Compartment.
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Aft view of Earth
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