updated 10:20 AM EDT, Sun October 19, 2014 <\/p>\n
STORY HIGHLIGHTS <\/p>\n
Los Angeles (CNN) -- Whatever it was doing up in space, we may never know, but the U.S. Air Force's unmanned X-37B space plane returned to Earth this week, with still no details from the military on the nearly two-year mission. <\/p>\n
\"The X-37B Orbital Test Vehicle mission 3 (OTV-3),\" as the military calls it, touched down at Vandenberg Air Force Base in California on Friday morning after conducting experiments in orbit for 674 days, the military said. <\/p>\n
Conspiracy theorists endlessly conjecture on what the Pentagon is doing with \"the newest and most advanced re-entry spacecraft.\" The Air Force's two vehicles resemble small space shuttles, and have now logged a combined 1,367 days in space, the military said. <\/p>\n
In the latest mission, the X-37B lifted off from Cape Canaveral in Florida on December 11, 2012. At the time, the Air Force said its mission would last about nine months. <\/p>\n
The military has spoken only in generalities about the spacecraft and its mission. <\/p>\n
Air Force X-37B space plane <\/p>\n
Air Force X-37B space plane <\/p>\n
Air Force X-37B space plane <\/p>\n
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Mystery space plane back on Earth<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" updated 10:20 AM EDT, Sun October 19, 2014 STORY HIGHLIGHTS Los Angeles (CNN) -- Whatever it was doing up in space, we may never know, but the U.S. Air Force's unmanned X-37B space plane returned to Earth this week, with still no details from the military on the nearly two-year mission. \"The X-37B Orbital Test Vehicle mission 3 (OTV-3),\" as the military calls it, touched down at Vandenberg Air Force Base in California on Friday morning after conducting experiments in orbit for 674 days, the military said Continue reading