Williams, who is currently serving as commander of the ISS, will exercise her democratic right from approximately 400 kilometers above Earth's surface.

What are the challenges? Are Sunita Williams and Butch Wilmore alone inside the ISS? How long can they endure?

The SpaceX Crew-9 mission, carrying NASA astronaut Nick Hague and Roscosmos cosmonaut Alexander Gorbunov, was specifically launched to provide a safe return option for Williams and Wilmore.