The US Air Force has been testing a mysterious unmanned space plane for the last few years known at the X-37B. It has spent more than a thousand days in orbit over just […]
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Air Force finally reveals mysterious space plane’s experimental engines
The US Air Force has been testing a mysterious unmanned space plane for the last few years known at the X-37B. It has spent more than a thousand days in orbit over just […]
from Geek.com http://ift.tt/1GEV2NM
via IFTTT
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