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Secretive US Space Force X-37B space plane 'breaks new ground' as it returns to Earth after 434 days in orbit (photos)
The X-37B Orbital Test Vehicle-7 U.S. Space Force’s dynamic unmanned space plane has successfully returned to Earth after a ...
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First In-orbit Photo Taken By Secretive Boeing X-37B Spacecraft Officially Released
Right now, there are two operational X-37B spaceplanes and a single X-37A. The last mission, OTV-6, spent a record-breaking 908 days in orbit, surpassing the previous 780-day record from OTV-5.