-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 ...

The enigmatic X-37B spaceplane, a classified endeavor of the U.S. Air Force, has taken to the skies once again. This time, its payload is a novel quantum GPS alternative, promising to revolutionize ...

The Air Force’s unmanned aircraft, X-37B, landed successfully Sunday morning at NASA’s Kennedy Space Center — but it didn’t come down quietly. The space plane sent a sonic boom that rattled ...