SPACE.com: Following the successful launch of its Falcon 9 rocket on 4 June, Space Exploration Technologies ( SpaceX) has signed the largest ever commercial rocket launch contract, worth almost $500 million, with Iridium Communications. SpaceX will use its Falcon 9 to launch Iridium’s communication satellites from Vandenberg Air Force Base in California. SpaceX already has a $1.6 billion contract with NASA to ferry cargo to the International Space Station.