SpaceX’s astronaut-riding Dragon arrives at space station

SpaceX delivered two astronauts to the International Space Station for NASA today, following up a historic liftoff with an equally smooth docking in yet another first for Elon Musk's company. With test pilots Doug Hurley and Bob Behnken poised to take over manual control if necessary, the SpaceX Dragon capsule pulled up to the station and docked automatically, no assistance