On This Day In Space April 22, 2010 X-37B Space Plane launches On 1st Top Secret Mission
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 […]
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