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

Human spaceflight to Mars could become a reality within the next 25 years, but not until some physiological problems are resolved, including an alarming loss of bone mass, fitness and muscle strength. Former astronaut James A. Pawelczyk, Ph.D. illuminated the issues in a keynote address today at the American College of Sports Medicine (ACSM) 10th-annual Health & Fitness Summit & Exposition in Orlando.