X-37B, -e shuttle, glided into the Vandenberg Air Force Base in California
A top secret US robot space plane landed back on Earth on Friday October 17, 2014, after a 22-month orbit

The unmanned X-37B, glided into the Vandenberg Air Force Base in California after having launched on December 11, 2012, on a mission that is still strictly secret.


Analysts say the X-37B could be a platform for spying from space, including possibly snooping on other countries´ satellites.


The X-37B can test technology for "reusable" spacecraft and conduct unspecified experiments that can be studied on Earth.


The X-37B, manufactured by aerospace giant Boeing, weighs five tonnes and measures about 29 feet (8.8 meters) long, with a wing span of roughly 15 feet across.

Traveling at speeds 25 times faster than the speed of sound, the vehicle is launched into space on the back of a rocket and, once its mission is complete, returns from orbit like a plane.

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