SpaceX's Falcon Heavy rocket poised for first commercial launch

SpaceX's Falcon Heavy rocket is poised for its first commercial space launch Wednesday, carrying a Saudi satellite operated by Arabsat, a year after sending founder Elon Musk's red Tesla roadster into orbit as a test.The Falcon Heavy is scheduled to lift off from the Kennedy Space center in Florida at 6:36 pm (2236 GMT) and place the six-ton Arabsat-6A satellite into geostationary orbit some 22,500 miles (36,000 kilometers) above the Earth.SpaceX has two operational rockets: the Falcon 9, which