On September 18, 1977, NASA's Voyager 2 spacecraft snapped this image, the first ever taken by a spacecraft that shows both the Earth and Moon in crescent form. Voyager 2 was launched from Earth about a month before this picture was taken -- and 16 days before Voyager 1, its twin craft -- and had traveled about 7.25 million miles away.
"This photo was made from three images taken through color filters, then processed at NASA's Jet Propulsion Laboratory," according to NASA. "Because the Earth is many times brighter than the moon, the moon was artificially brightened so that both bodies would show clearly in the prints."
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