Space Exploration Technologies Corporation (SpaceX) is a space transportation companies that was started by PayPal co-founder Elon Musk. SpaceX is building reusable space launch vehicles called the Falcon 1 and the Falcon 9 along with a Dragon series of vehicles.
The company started in 2002 and employs about 800 people. Musk himself put $100 million in seed funding for the company. After that the company raised $20 million in Series A from The Founders Fund. The company is now pursuing an additional $60 million additional round. DFJ put in about $15 million of the new round.
Last year SpaceX launched a rocket into space after failing three times. Now SpaceX is being hired by aerospace companies and the government to launch satellites.