Human Spaceflight Physiology Questions Remain Unanswered

Trip to Mars Will Challenge Bones, Muscles: Former Astronaut calls for More NASA Research on Exercise in Space, American College of Sports Medicine

“During a trip to Marslasting between 13 and 30 monthsunchecked bone loss could make an astronaut’s skeleton “the equivalent of a 100-year-old person,” [Neurolab astronaut James A. Pawelczyk, Ph.D.] warned. Bones weakened to such an extent would be highly susceptible to fractures, putting space travelers’ health and the mission itself at risk.”

Editor’s note: So what kind of research are they cutting on ISS? You guessed it: life science.