US military's mysterious X-37B space plane zooms toward orbital record

US military’s mysterious X-37B space plane zooms toward orbital record

The U.S. military’s X-37B robotic space plane is closing in on a mission-duration record.

The X-37B launched to Earth orbit on May 17, 2020 on the sixth mission for the program, a flight known as Orbital Test Vehicle-6 (OTV-6). 


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