The Dragon supply ship pulled up today, two days after launching from Florida. This same capsule dropped off a shipment in 2014. SpaceX recycled it for an unprecedented second trip.
Until their 2011 retirement, NASA's shuttles made multiple flights to the space station. But it's the first time a private company has achieved such a feat. The Americans on the space station - Jack Fischer and Peggy Whitson - used a robot arm to capture the Dragon as the craft soared above the South Atlantic.