NASA astronauts are returning to Earth after nine months in space. Experts have said a prolonged period in space can come with changes to human physiology and psychology.

NASA astronauts Butch Wilmore and Suni Williams are set to arrive home on SpaceX after spending 9 months on the ISS after Boeing’s Starliner was sent back empty.

Starliner astronauts Suni Williams and Butch Wilmore, who were stranded at the International Space Station for nine months, are back on Earth after splashing down Tuesday off the coast of Florida.