Boeing expected to win first operational space taxi order
SpaceX confirms first Crew Dragon flights will return to ocean landings
Boeing, SpaceX on track for commercial crew flights to station in 2017
NASA outlines why it passed over Sierra Nevada
NASA cited the complexity of Sierra Nevada’s Dream Chaser space plane and an uncertainty of when the proposed crew transport craft would be ready to fly astronauts to the International Space Station as the primary reasons the agency picked Boeing and SpaceX for lucrative contracts to develop commercial space taxis.