If you've ever had any doubt whether SpaceX's Falcon 9 really touched down on a barge, you should watch this YouTube video. It shows a 360-degree view of the drone ship as the rocket was landing, which means you can drag the video around to watch it from different angles or view it using a VR headset. SpaceX successfully landed its reusable rocket at sea for the first time in early April after several failed attempts. The historic booster was transported back to the Kennedy Space Center to make sure everything's working properly. If it's still in perfect condition, the commercial space company might launch it again at a later date.