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The US Space Force's secretive X-37B space plane: 10 surprising facts

August 31, 2021
The US Space Force's secretive X-37B space plane: 10 surprising facts
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Learn all about the U.S. Space Force's robotic X-37B space plane, which has flown six mystery missions to date.



September 1, 2021 at 03:43AM
via Space.com read more...

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