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Last updated on April 23, 2014 at 21:24 EDT
Western Hemisphere
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Western Hemisphere

October 22, 2005
Using data from the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard NASA's Terra satellite, scientists and data visualizers stitched together a full year's worth of monthly observations of the land surface, coastal oceans, sea ice, and clouds into a seamless, photo-like mosaic of every square kilometer (.386 square mile) of our planet.