Here’s how the program is described by the DARPA’s website ... survivability for our most challenging and sensitive missions.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The disappearance ...

And now, the X-37B has notched another milestone with the Space Force's release of this photo, the first-ever image of this space plane in orbit ... above our planet. The X-37B recently made ...