We know it’s been circling the earth at 17,000 MPH since last year, but its purpose is a complete mystery. It was originally slated to land in California last December, but the landing was postponed for unknown reasons. There are a few clues: when it launched, the unmanned space plane was prepared by a team in biohazard suits. Radioactive cargo? Who knows? Click the link below for more.
Thanks to our friends at the Daily Mail