SpaceX has been trying to land one of the company's Falcon 9 rockets on a floating landing pad in the ocean for months now with no success, and yesterday's launch was particularly challenging as the rocket had much farther to go and thus had to deal with a hotter reentry and less fuel.

The days building up to the mission itself were tough, with the launch getting delayed six times out of worries about everything from the weather to a ship that wandered into the "safety zone" around the landing barge in the Atlantic Ocean off the coast of Florida. When it finally came, though, the launch was a huge success.