An unmanned US plane on a top-secret, two-year mission to space has returned to Earth and landed in California.

The aircraft, resembling a miniature space shuttle and known as the Orbital Test Vehicle or X-37B, spent 674 days in orbit around the planet.

It was the unmanned plane’s third space flight, but its mission has been shrouded in mystery.

A theory that it was taking a look at China’s space lab has been downplayed by experts.

Air Force officials have only told US media the aircraft performs “risk reduction, experimentation and concept-of-operations development for reusable space vehicle technologies”.

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http://edosnews.com/mysterious-us-military-plane-returns-to-earth/

Very advanced technology indeed