Wilmore and Williams were the first crew to fly Boeing’s Starliner spacecraft in a key test flight in June, but NASA deemed their return too risky after issues with the craft’s propulsion system

Weather permitting, the SpaceX capsule carrying two astronauts, who have been on the station for nine months, will undock from the space station no earlier than Wednesday and splash down off Florida’s

The four astronauts should reach the space station Saturday night, paving pave the way for next week's return of Butch Wilmore and Sunita "Suni" Williams, who grew up in Needham.