DefenceTalkA top secret US robot space plane landed back on Earth on Friday after a 22-month orbit, officials said, although the craft’s mission remains shrouded in mystery. The unmanned X-37B, which looks like a miniature space shuttle, glided into the Vandenberg Air Force Base in California after having launched on December 11, 2012, on a […]https://www.defencetalk.com/us-militarys-robot-space-plane-lands-back-on-earth-60783/