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On April 22, 2010, the U.S. Air Force launched the super-secret X-37B space plane on its first spaceflight. [
This space plane is also known as the Orbital Test Vehicle. It looks a lot like NASA's space shuttle, only it's much smaller and doesn't have any windows. But the X-37B doesn't need windows anyway, because no one actually flies in it. It's completely autonomous and can even land on a runway without a human pilot. The X-37B has flown several highly classified payloads on long-duration missions. For its first flight, the X-37B launched on an Atlas V rocket from Cape Canaveral and it orbited the Earth for 224 days. The Air Force never disclosed what kind of experiments were going on during that time.
Transcript
00:00On this day in space. On April 22, 2010, the US Air Force launched the super-secret X-37B
00:08spaceplane on its first spaceflight. This spaceplane is also known as the
00:13Orbital Test Vehicle. It looks a lot like NASA's space shuttle, only it's much
00:17smaller and it doesn't have any windows. But the X-37B doesn't need windows
00:21anyway, because no one actually flies in it. It's completely autonomous and can
00:25even land on a runway without a human pilot. The X-37B has flown several
00:30highly classified payloads on long duration missions. For its first flight,
00:34the X-37B launched on an Atlas V rocket from Cape Canaveral and it orbited the
00:37Earth for 224 days. The Air Force never disclosed what kind of experiments were
00:42going on during that time. And that's what happened on this day in space.

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