On February 14, 1990, the Voyager 1 spacecraft turned its camera back toward Earth from a distance of 6.06 billion kilometers. The resulting photograph captured Earth as a tiny point of light, less than a single pixel in size, suspended in a scattered ray of sunlight.
Carl Sagan, who had campaigned for the photograph to be taken, wrote about it in his 1994 book of the same name. The passage has since become one of the most widely shared reflections on our place in the cosmos.
Audio: Carl Sagan, 1994
Photograph: NASA / JPL-Caltech / Voyager 1
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