Dragon bids goodbye to the International Space Station. The next SpaceX commercial resupply mission is scheduled for launch at the end of September. SpaceX, founded in 2002 by billionaire entrepreneur Elon Musk, builds low-cost rockets and spacecraft and is one of just two private spaceflight companies NASA has contracted for unmanned cargo delivery missions to the International Space Station. The other is Virginia-based Orbital Sciences. This mission marked the second in a series of at least a dozen commercial space station resupply missions under a $1.6 billion NASA contract.