Science
10 things we know about the secret X-37B space plane – Livescience.com
A rundown of known facts about the Department of Defense’s X-37B orbital vehicle.
The U.S. Department of Defense’s uncrewed X-37B spy plane is one of the most intriguing spaceships in the world, flying regular covert missions whose purposes aren’t fully known. But over the years, information about the craft, which is also known as the…
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