
John W. Young (1930-2018), born on Sept. 24, was NASA's longest-serving astronaut and the only astronaut to fly missions in the Gemini, Apollo and Space Shuttle Programs. via NASA https://ift.tt/UrxWQz
A new image from NASA’s James Webb Space Telescope of a portion of the Helix Nebula highlights comet-like knots, fierce stellar winds, and ...
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