Cassini spacecraft photographs Earth from 900 million miles away
A photo by the Cassini spacecraft shows the rings of Saturn, with Earth a faint blue dot in the distance.NASA/JPL/Cassini/Guillermo Abramson A photo by the Cassini spacecraft shows the rings of Saturn, with Earth a faint blue dot in the distance.NASA/JPL/Cassini/Guillermo Abramson Carl Sagan once
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