VIDEO: Air Force’s Mysterious X-37B Space Plane Breaks Orbital Record, May Land at KSC

By  //  March 26, 2017

X-37B has spent 675 days IN SPACE

ABOVE VIDEO: The ongoing mission of the U.S. Air Force’s robotic X-37B space plane is now the longest in the clandestine program’s history. The vehicle’s latest mission marked 675 days in space on March 25, 2017, setting a new duration record for the X-37B program.

SPACE.COM – The ongoing mission of the U.S. Air Force’s robotic X-37B space plane is now the longest in the clandestine program’s history.

As of March 25, the X-37B has spent 675 days on its latest Earth-circling mission, which is known as Orbital Test Vehicle-4 (OTV-4).

The previous record was 674 days, set during OTV-3, which lasted from December 2012 to October 2014.

It’s unclear what the new duration record will end up being; most X-37B activities and payloads are classified, and the Air Force has historically been tight-lipped about landing plans.

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ABOVE VIDEO: All four X-37B missions have launched from Florida’s Cape Canaveral Air Force Station.