Air Force's mysterious X-37B spacecraft sets new record for time in space - CNN
- Air Force's mysterious X-37B spacecraft sets new record for time in space CNN
- Secretive US Air Force Spaceplane Breaks Record With 719 Straight Days in Orbit Gizmodo
- A secretive space drone just broke its own orbit record, and almost no one knows what it’s doing Washington Post
- Air Force X-37B space plane breaks record for consecutive days in orbit AirForceTimes.com
- A Top Secret Air Force Space Drone Has Been Orbiting Earth for Almost 2 Years VICE
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