The US Space Force's secretive X-37B space plane: 10 surprising facts | Space
Boeing X-37 - Wikipedia
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X-37B after landing photos. – sUAS News – The Business of Drones
File:X-37B orbital test vehicle landing.jpg - Wikimedia Commons
File:X-37B orbital test vehicle landing-2.jpg - Wikimedia Commons
X-37B OTV (Orbital Test Vehicle) - eoPortal
Boeing X-37 - Wikipedia
MilsatMagazine
Boeing X-37B unmanned spacecraft successfully completes first flight
USA-226 - Wikipedia
Secret Mini Space Shuttle Could Launch April 19 - Universe Today
Boeing X-37B | Spacecraft Wiki | Fandom
Boeing X-37 - Wikipedia
Boeing X-37 - Wikipedia
USA-299 - Wikipedia
X-37B secret spaceplane returns after record-breaking flight
X-37B: The Air Force's Mysterious Space Plane | Space
X-37B orbital test vehicle concludes sixth successful mission > United States Space Force > News
