Navigation for News Categories Photo: AFP PHOTO / NASA TV Swollen faces, struggling to walk and a loss of vision are just some of the effects of a prolonged trip to space, but scientists say the health of astronauts can help people back on Earth. Astronauts Butch Wilmore and Suni Williams have captured the world's attention for their drawn out drama on the International Space Station. Back on earth after nine months, their bodies and minds will continue to be under scrutiny by scientists includi...