Boeing’s Starliner undocked from the International Space Station on Friday, months later than the spacecraft was originally supposed to depart — and without the two astronauts that it delivered to orbit in early June.

Instead, NASA test pilots Butch Wilmore and Suni Williams will stay at the ISS for the rest of the year and will return to Earth in February aboard SpaceX’s Dragon spacecraft.

It left the space station at 6:04 p.m. ET Friday. The capsule is expected to take about six hours to return to Earth and reach a landing zone at White Sands Space Harbor in New Mexico. NASA said it could be visible from parts of western Mexico and the Southwestern United States before landing.