US plane on secret mission returns to Earth after 22 months in orbit | world | Hindustan Times
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US plane on secret mission returns to Earth after 22 months in orbit

After spending about 22 months orbiting the Earth on a secret mission, a US Air Force X-37B unmanned, reusable space plane has finally returned.

world Updated: Oct 18, 2014 21:08 IST

After spending about 22 months orbiting the Earth on a secret mission, a US Air Force X-37B unmanned, reusable space plane has finally returned.

The spacecraft which blasted off in December 2012 for its third space mission touched down at California's Vandenberg Air Force Base Friday, Xinhua reported.

"The mission is our longest to date and we're pleased with the incremental progress we've seen in our testing of the reusable space plane," the US Air Force said in a statement.

Picture provided by the US Air Force shows personnel inspecting the X-37B after landing on December 3, 2010 at Vandenberg Air Force Base in California. (AFP Photo handout-US Air Force)

The programme is being run by the Air Force's Rapid Capabilities Office, and there are two space planes in the fleet, both built in tight secrecy by Boeing.

The X-37B space planes look much like NASA's retired space shuttles, only much smaller.

Each X-37B spacecraft is about 8.8 metres long and 4.5 metres wide.

The aim of the spacecraft is to "demonstrate a reliable, reusable, unmanned space test platform for the US Air Force," the statement added.