SpaceX successfully launched the U.S. Air Force's reusable robotic space plane on its latest secret mission today. This is its fifth mission, but the first aboard a SpaceX rocket. The space plane was launched aboard a Falcon 9 rocket at Kennedy Space Center at 10 a.m. Following the launch, the first stage of the Falcon 9 rocket returned to SpaceX's landing zone at Kennedy. A second mission launched in March 2011 and lasted 15 months, while a third took flight in December 2012 and returned after 22 months.

Source: CBC News September 07, 2017 12:44 UTC