The U.S. military's top-secret X-37B space plane has returned from a mysterious 434-day mission in orbit. The enigmatic mission 'broke new ground' for reusable space technology, according to the U ...

The United States Space Force’s secretive X-37B space plane touched down to earth on Friday after spending 434 days in orbit conducting mysterious tests. The unmanned Boeing-made aircraft landed ...

The spacecraft, X-37B, is a top-secret, experimental space plane. The US government's top-secret X-37B space plane returned to Earth after a 434-day mission in orbit, a statement by the US Space ...