An uncrewed U.S. Air Force space plane has just broken the record for time spent in orbit. What it's specifically been doing up there has been kept a tightly guarded secret. The X-37B, which looks ...

The United States military’s most enigmatic spacecraft is back in orbit, and this time officials are hinting more clearly at what it is doing up there. The eighth flight of the reusable X-37B space ...

SpaceX successfully launched a secret US Air Force space plane on Thursday ahead of the arrival in Florida of Hurricane Irma. Live images broadcast by the California aerospace company showed a Falcon ...

The new X-plane is now officially known as the X-68A. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, the latest updates on ...