A commercial Dragon cargo capsule is heading back to Earth Tuesday to conclude a 31-day stay at the International Space Station. The SpaceX-owned spacecraft was released from the station’s Canadian-built robotic arm at 10:59 a.m. EDT (1459 GMT), and the Dragon supply ship splashed down in the Pacific Ocean with nearly 3,400 pounds of cargo at 4:21 p.m. EDT (2021 GMT).

In the home stretch of nearly a half-year on the International Space Station, four astronauts suited up and rode their SpaceX-owned Crew Dragon “Resilience” spaceship to a new docking port outside the orbiting research lab Monday, a first-of-its kind maneuver for the new generation of commercial crew spaceships.

Flight controllers and other essential personnel at NASA’s Johnson Space Center just south of Houston are sheltering in place, maintaining contact with the International Space Station during torrential rain and flooding across south Texas from the slow-moving remnants of Hurricane Harvey.