The X-37B Mystery Spacecraft Just Had Its Nine Month Mission Extended Indefinitely Robert Johnson Dec. 3, 2011, 9:15 AM Image: US Air Force The pilotless X-37B Orbital Vehicle has been silently circling the planet for the past nine months and the Air Force has announced it will continue its classified mission indefinitely. W.J. Hennigan of the Los Angeles Times reports the X-37B resembles a smaller version of the space shuttle and is said to test various new technologies in space. Via CSM: "We initially planned for a nine-month mission, which we are roughly at now, but we will continue to...