NASA on Tuesday swapped out the astronaut capsule it plans to use for an upcoming routine flight to the International Space Station, a scheduling move that will allow a slightly earlier return for two Starliner astronauts who have been on the station far longer than expected.

NASA said SpaceX will switch capsules and bring Butch Wilmore and Needham native Suni Williams home in mid-March.

Butch Wilmore and Suni Williams, who is from Needham, could be coming home in mid-March because NASA will switch capsules for upcoming flights.