The International Space Station (ISS) is almost the size of a football field. It serves as a laboratory and living space for astronauts, including Sunita Williams and Butch Wilmore, who spent 9 months aboard stranded.

Nasa astronaut Sunita Williams is gearing up for her return to Earth on March 19, 2025, after months aboard the International Space Station (ISS). But coming home from space isn’t as simple as boarding a plane—it’s a battle against gravity itself.

The four newcomers — representing the US, Japan and Russia — will spend the next few days learning the station's ins and outs from Butch Wilmore and Indian-American Sunita Williams.