Right now, flying to the International Space Station means leaving from Russia, but it won't always be that way. Today, NASA announced that it officially ordered a crew rotation mission from Elon Musk's SpaceX, due to launch sometime in 2017. This is actually the second mission order to come out of the space agency's Commercial Crew Program -- the first order being awarded to Boeing back in May -- but it's still not clear which commercial outfit will have the honor of playing taxi for astronauts first.