SpaceX pulled off its fifth rocket landing in the last seven months early Monday morning, this time bringing a booster back during a successful cargo launch toward the International Space Station Under a bright moonlit sky, SpaceX launched its Falcon 9 rocket laden with supplies for the International Space Station Among its cargo, the rocket is carrying one of two docking rings to the International Space Station a crucial step in enabling U.S. commercial space taxis to ferry astronauts to the orbiting lab It will serve as a parking space for commercial spaceships under development by SpaceX and Boeing