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A 'Blue Marble' image of the Earth taken from the VIIRS instrument aboard NASA's most recently launched Earth-observing satellite - Suomi NPP.

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The Expedition 27 crew photographed this sunset over western South America from aboard the International Space Station. This zone of diffuse lighting is experienced as dusk or twilight on the ground--while the sun is no longer visible, some illumination is still present due to light scattering over the local horizon.

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In this image taken on Jan. 25, 2012, the Aurora Borealis steals the scene in this nighttime photograph shot from the International Space Station as the orbital outpost flew over the Midwest.

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An Expedition 30 crew member aboard the International Space Station took this nighttime photograph of much of the Atlantic coast of the United States.

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One of the fascinating aspects of viewing Earth at night is how well the lights show the distribution of people. In this view of Egypt, the population is shown to be almost completely concentrated along the Nile Valley, just a small percentage of the country's land area.

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This panorama of much of the East Coast provides a look generally northeastward: Philadelphia-New York City-Boston corridor (bottom-center); western Lake Ontario shoreline with Toronto (left edge); Montreal (near center). An optical illusion in the photo makes the atmospheric limb and light activity from Aurora Borealis appear "intertwined."

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Like rivers of liquid water, glaciers flow downhill, with tributaries joining to form larger rivers. But where water rushes, ice crawls. As a result, glaciers gather dust and dirt, and bear long-lasting evidence of past movements.

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Off the coast of Argentina, two strong ocean currents recently stirred up a colorful brew of floating nutrients and microscopic plant life just in time for the Southern Hemisphere's summer solstice. The Moderate Resolution Imaging Spectroradiometer on NASA's Aqua satellite captured this image of a massive phytoplankton bloom off of the Atlantic coast of Patagonia on Dec. 21, 2010.

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The Remote Sensing Center

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The Remote Sensing Center