BA]-built X 37B Orbital Test Vehicle launched today on its eighth mission, lifting off at 11:50PM ET aboard a SpaceX Falcon 9 from Kennedy Space Center, Fla. The vehicle is healthy on orbit and proceeding with standard checkout.

The Space Force's mysterious X-37B space plane is set to lift off from Kennedy Space Center this week. Here's what we know about this secret mission.

Boeing confirmed Friday that its X-37B Orbital Test Vehicle remains in good health after its recent launch, and is now proceeding with routine checks