SpaceX Returns to Flight

Over the weekend --on Saturday, Jan. 14, 2017-- SpaceX launched a Falcon 9 into space, successfully completing its primary mission of deploying ten Iridium communication satellites. The secondary mission? To land the first stage booster on a drone ship in the Pacific. And that happened perfectly: How cool is that? That's the time-lapse version of events; what happened is that after boosting the second stage toward orbit, the first stage flipped around, performed an engine burn to slow down, flip...