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Spaceplane - Wikipedia
Boeing X-37 - Wikipedia
The secretive X-37B space plane is headed back into orbit ... - NBC News
X-37B military space plane lands, ending record-breaking mission | Space
X-37B spaceplane completes its sixth mission, lands after nearly …
SpaceX Falcon Heavy rocket launches mysterious X-37B space plane …
10 things we know about the secret X-37B space plane
Dream Chaser space plane arrives in Florida ahead of 1st launch …
US military's secretive spaceplane launched on possible higher …
SpaceX Falcon Heavy launches X-37B plane, one of the US military ... - CNN