A recently launched NASA satellite has sent back this stunning mosaic image of Earth, captured over a 24-hour period.
NOAA-21 was launched on November 10 and captured the incredible photo composite on December 5 and December 6.
Unlike geostationary satellites, polar-orbiting satellites capture swaths of data throughout the full globe and observe the entire planet twice each day.NOOA-21 cruises at 512 miles above Earth at 17,000 miles per hour and crosses the equator 14 times per day. Aside from beaming back marvelous imagery, VIIRS provides global measurements of the atmosphere, land, and oceans. Over the oceans, it measures ocean color that helps detect harmful algal blooms, and monitors phytoplankton activity, as well as sea surface temperature, a key ingredient for fueling hurricanes.Dr.
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