Technicians work on the the first X-37B space plane after a smooth landing on Dec.3, 2010 at Vandenberg Air Force Base in California. The same X-37B spacecraft launched back into space on Dec. 11, 2012, and could land at Vandenberg on Tuesday ( (U.S. Air Force/Michael Stonecypher)
The U.S. Air Force's mysterious X-37B space plane will return to Earth this week —possibly as early as Tuesday — after 22 months in orbit on a secret mission.
15:59 NASA aborts SpaceX rocket launch after last-minute technical trouble29
11:00 SpaceX poised to launch cargo from historic NASA pad22
19:30 SpaceX Investigating Small Leak in Rocket Scheduled for Saturday Launch26
17:37 NASA, heeding Trump, may add astronauts to a test flight moon mission22