SpaceX finally manages to land re-usable rocket onto a barge, after dropping off supplies at International Space Station

SpaceX has finally managed to safely land its re-usable rocket onto a barge, after previous repeated attempts saw the Falcon 9 kit explode. Successfully landing the booster onto the large "drone ship" is a huge step forward for SpaceX and its found Elon Musk, and for private space travel more generally. The company hopes that the re-usable rockets will make space travel much cheaper in future, since they can be re-filled and then sent back into space rather than re-building from scratch. Mr Musk celebrated the successful landing by referencing the T-Pain song "I'm On A Boat". He later deleted the tweet.