The X-37B spaceplane was designed for an on-orbit duration of 270 days. The Air Force’s X-37B Orbital Test Vehicle Mission 5 successfully landed…
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X-37B
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Space
719 Days of Orbital Spaceflight and Counting: the Mysterious X-37B Set New Spaceflight-Duration Record
by Dario LeoneThe current X-37B mission has broken a new spaceflight-duration record that was previously set at 717 days, 20 hours and 42…