Air Force’s X-37B Space Plane Mystery Mission Wings by 500 Days in Orbit
Space.com | The latest secretive mission of the United States Air Force’s X-37B space plane has cruised beyond 500 days in Earth orbit since its launch last year.
Space.com | The latest secretive mission of the United States Air Force’s X-37B space plane has cruised beyond 500 days in Earth orbit since its launch last year.
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