NASA astronaut Christina Koch shared a poetic Earth Day message and images from the Artemis II lunar flyby, echoing Carl Sagan’s reflections on humanity’s place in the cosmos. The mission, the first ...
Before etching their names in spaceflight history, the four Artemis II astronauts received some posthumous words of encouragement from one of NASA's greats. Jim Lovell, who flew on two Apollo-era ...
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