The USAF launched a secretive space plane into orbit last night from Cape Canaveral, Florida. And they’re not sure when it’s returning to Earth. It perched atop an Atlas V rocket, the USAF's unmanned and reusable X-37B made its first flight after a decade in development shrouded in mystery, The spacecraft is to serve as a test platform for unspecified experiments and can stay in orbit for up to 270 days before gliding to an autonomous runway landing. The primary landing site is Vandenberg Air Force Base on the California coast northwest of Los Angeles. Most of the mission goals remain unknown to the public. I bet they are up to something as usual..