The United States military’s most enigmatic spacecraft is back in orbit, and this time officials are hinting more clearly at ...

Space X's Falcon Heavy rocket returned to the skies Thursday night, launching a mysterious spacecraft for the U.S. military. The rocket lifted off from NASA's Kennedy Space Center in Florida. It's ...

-America’s X-37B space plane looks like a scaled-down shuttle, but it has become one of the most consequential military programs of the post-Cold War era. -Born as a NASA technology demonstrator and ...

"We want to look at the effects of long-term exposure to space — as if the Zylon material is going for a potential six- to nine-month mission to Mars." When you purchase through links on our site, we ...