Analysis: SpaceX can finally say 'I'm on a boat.' Here's why that matters

History-altering moments can happen when you least expect it. I'm pretty sure we just witnessed one of those Friday.For anyone who missed it, SpaceX launched a Falcon 9 rocket into orbit, then landed it upright on a drone ship bobbing in the Atlantic Ocean. It had tried to do this four times before, but failed each time, sometimes spectacularly. This time, though, it got it spectacularly right. The rocket landed by itself, and it couldn't have done so more perfectly. It approached the ship in a