NASA and SpaceX on Friday will count down to a long-awaited crewed rocket launch that will allow them to bring home U.S. astronauts Butch Wilmore and Suni Williams, who have been stuck on the International Space Station for nine months.

NASA and SpaceX are preparing to launch four astronauts to the International Space Station (ISS) on Friday night from Florida.

A crew of four was set to head to the International Space Station on Wednesday, but NASA and SpaceX scrubbed the planned launch attempt of the agency's Crew-10 mission due to an issue with the hydraulic system for a ground support clamp arm for the Falcon 9 rocket,