In December 1972, NASA's final Apollo mission (Apollo 17) took the iconic "Blue Marble" photo of the whole Earth. Many, including science fiction writer Arthur C. Clarke, had expected that the sight ...
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Editor’s Note: In Snap, we look at the power of a single photograph, chronicling stories about how both modern and historical images have been made. On Christmas Eve in 1972, humanity received a gift: ...
Nearly 20 years ago, an idea came to Vice President Al Gore in a dream. He envisioned a satellite that would sit far out in space, nearly one percent of the way to the sun, consisting almost entirely ...
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