The Crew 10 Dragon capsule caught up with the International Space Station and moved in for a textbook docking early Sunday, bringing four fresh crew members to the lab and clearing the way for the Starliner astronauts to return to Earth after nearly 300 days in space.

If Suni Williams and Butch Wilmore depart on schedule, they will have have spent more nearly 10 months in space, but it's not unheard of.

NASA astronauts Butch Wilmore and Suni Williams arrived at the ISS aboard Boeing's Starliner spacecraft last June. The duo were flying the capsule's first crewed flight test, which was expected to stay in orbit for about 10 days before flying the pair back to Earth.