The four Crew-11 crew members joined seven other astronauts in the International Space Station early Saturday morning following a 15-hour journey from Florida.

On August 1, SpaceX launched its 11th crew rotation for NASA. The four will spend six to eight months on the International Space Station.

NASA and SpaceX successfully launched four astronauts to the International Space Station on Friday. The Crew-11 mission took off at 11:43 a.m. from Launch Complex 39A at NASA’s Kennedy Space Center. Friday’s launch comes after weather forced SpaceX to scrub the launch on Thursday with 1 minute to go.