SpaceX's Falcon 9 rocket enjoyed a successful maiden test flight today, June 4, 2010. The rocket, which could one day carry astronauts, blasted-off from its launch pad at Cape Canaveral, Florida, at 1845 GMT. The California-based firm developed the vehicle with a large contract from NASA. The first launch attempt of the day was aborted at the last second because an engine parameter fell out of limits. But the second attempt went flawlessly, with the vehicle acieving orbit.