Astronauts Suni Williams and Butch Wilmore, who were stranded at the International Space Station for nine months after they were forced to abandon Boeing Starliner due to thruster issues, are finally back on Earth after a successful splashdown Tuesday at 5:57 p.

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.