When NASA put it out there that they would no longer be sending humans into orbit back in 2011, they encouraged private companies to fill that gap. Among the contenders were aerospace veterans Boeing, and a couple of newer faces in Jeff Bezos's Blue Origin and Elon Musk's SpaceX.
Musk's venture has been the clear winner in that race, with the SpaceX team making history by sending humans up to the International Space Station in a commercially produced vehicle for the first time ever.
While that is a massive accomplishment well worth celebrating, it's far from the only iron in SpaceX's ambitious fire.