NASA has selected SpaceX, Orbital ATK and Sierra Nevada Corp. to fly cargo to the International Space Station (ISS) starting in 2019, the agency announced today (Jan 14). Between 2019 and 2024, NASA will purchase a minimum of six uncrewed cargo missions from each of the three companies, agency officials said in a media briefing today. The space agency has the option to purchase additional re-supply missions from any of the three providers, and will likely do so, said Kirk Shireman, program manager for the ISS. SpaceX and Orbital ATK were selected as cargo providers in NASA's first round of...