Crew welcomed into International Space Station to replace astronauts stranded for nine months

A crew has entered the International Space Station (ISS) to replace the astronauts who were stranded there for nine months.

A SpaceX capsule delivered four astronauts on Sunday on a mission to allow Butch Wilmore and Suni Williams - who have been on the ISS since June 2024 - to return home.

The Dragon craft, with the Crew-10 astronauts inside, docked with the orbiting laboratory at 4.04am UK time, around 29 hours after it had been launched on the top of the Falcon 9 rocket from NASA's Kennedy Space Center in Florida.

NASA's Anne McClain and Nichole Ayers, both military pilots, along with Japan's Takuya Onishi and Russia's Kirill Peskov, both former airline pilots, will spend the next six months at the space station.

Their mission will allow four members of Crew-9, which includes Mr Wilmore and Ms Williams, to return to Earth.

It took several minutes for Dragon to safely dock at the ISS, in what is an automated process.

But there was about 1 hour and 45 minutes of additional safety checks before the hatch could be opened.

Mr Wilmore swung open the space station's hatch and rang the ship's bell as the arrivals floated in one by one and were greeted with hugs and handshakes.

How they were stranded

Mr Wilmore and Ms Williams originally planned to go to space for just eight days but got stuck on the station after their Boeing Starliner spacecraft started experiencing problems.

Technical issues left them stranded, and various attempts to bring them home were unsuccessful.

The craft encountered so many problems that NASA insisted it return to Earth empty, leaving the pilots behind until now.

'You can hardly even put it into words'

"It was a wonderful day. Great to see our friends arrive," Ms Williams told Mission Control after the new astronauts had been welcomed aboard.

Speaking after the successful docking, Ms McClain added: "Crew-10 has had a great journey up here and I cannot tell you the immense joy of our crew when we looked out the window and we saw the space station for the first time.

"That is such an amazing journey. You can hardly even put it into words."

The journey back to Earth

The four newcomers will spend the next few days learning the station's ins and outs from Mr Wilmore and Ms Williams.

Then the two of them will strap into their own capsule later in the week, one that has been up there since last year, to close out the unexpected extended mission.

The pair's ride back arrived in late September with a downsized crew of two and two empty seats reserved for the leg back.

But more delays emerged when their replacements' brand new capsule needed extensive battery repairs.

An older capsule took its place, pushing up their return by a couple of weeks to mid-March.

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Weather permitting, the SpaceX capsule carrying them and two other astronauts will undock no earlier than Wednesday and splash down off Florida's coast.

(c) Sky News 2025: Crew welcomed into International Space Station to replace astronauts stranded for nine months