After a nine-month extended stay aboard the International Space Station, Suni Williams and Butch Wilmore have arrived back to Earth. Dr. Tom Marshburn joins to discuss what they may be going through as they adjust to Earth's gravitational pull.

Suni Williams and Butch Wilmore are gearing up to return toE Earth on Tuesday after an unexpected nine months aboard the ISS, and experts are sharing a number of health effects the pair might experience when they re-enter Earth's atmosphere.

Nine months in space can permanently alter the body, leaving astronauts with possible long-term health effects.