Cimon the robot blasts off to the International Space Station

A second-hand SpaceX rocket has blasted off to the International Space Station, carrying a robot with artificial intelligence and other station supplies. The shipment – packed into a Dragon capsule that is also recycled – should reach the station on Monday. This marked SpaceX's fastest reflight of a rocket booster. The same first-stage booster launched the planet-hunting TESS satellite in April, while the capsule flew in 2016. The Dragon will deliver the robot Cimon, which stands for Crew Interactive Mobile Companion and is pronounced Simon.