CAPE CANAVERAL, Florida (AP) — SpaceX delivered a fresh crew to the International Space Station on Saturday, making the trip in a quick 15 hours.

The four U.S., Russian and Japanese astronauts pulled up in their SpaceX capsule after launching from NASA’s Kennedy Space Center. They will spend at least six months at the orbiting lab, swapping places with colleagues up there since March. SpaceX will bring those four back as early as Wednesday.