Two astronauts, Sunita Williams and Butch Wilmore, are set to return to Earth on Tuesday evening after an unexpected nine-month stay on the ISS. NASA and SpaceX have revised the splashdown timing due to favorable conditions,

Suni Williams and Butch Wilmore are one more step closer to returning to Earth after an initially short mission became an extended, monthslong stay aboard the International Space Station.

Williams, Wilmore, fellow Nasa astronaut Nick Hague and Russian cosmonaut Alexandr Gorbunov — a quartet called Crew-9 — are scheduled to use the Dragon capsule to return to Earth after a 'handover' exercise.