Sunita Williams & Butch Wilmore: How space affects the body / How space weakens the human body / What do long trips to space do to your body? / What does living in space do to the human body? / Stranded astronauts: How space affects the body / This is what being in space does to your body / The many, many reasons space travel is bad for the human body / Microgravity in space may cause cancer, but mimicking weightlessness could help researchers develop treatments