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.

Astronauts Suni Williams and Butch Wilmore made splashdown on Earth on Tuesday after spending nine months in space. A SpaceX crew with replacements for the two astronauts arrived at the

SpaceX successfully rescued the NASA astronauts who were stranded aboard the International Space Station for 9 months, the splashdown has been confirmed.