NASAのインスタグラム(nasa) - 9月8日 09時21分

The image shows Earth today, September 7, 2013, as seen by the Geostationary Operational Environmental Satellites (GOES) satellite. Geostationary describes an orbit in which a satellite is always in the same position with respect to the rotating Earth. This allows GOES to hover continuously over one position on the Earth's surface, appearing stationary. As a result, GOES provide a constant vigil for the atmospheric "triggers" for severe weather conditions such as tornadoes, flash floods, hail storms, and hurricanes.

Image Credit: NASA/NOAA GOES Project
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