Four astronauts will soon launch to the space station — a flight that will kick off a series of events culminating in the long-awaited return of NASA astronauts Suni Williams and Butch Wilmore.

The Nasa-SpaceX mission to replace US astronauts Barry Wilmore and Sunita Williams with a new crew at the International Space Station (ISS) was delayed due to a launch pad issue. The duo, which went to space last June,

NASA will wait at least another two days to launch its next space station crew, delaying the return of Starliner astronauts Barry "Butch" Wilmore and Sunita Williams a bit longer.