FILE - Inspiration4 crew member Jared Isaacman, right, waves to family members before a trip to Kennedy Space Center's Launch Pad 39-A and a planned liftoff on a SpaceX Falcon 9 rocket, Sept. 15, 2021, in Cape Canaveral, Fla. New research presents the largest set of information yet regarding how the human body reacts to spaceflight. (AP Photo/John Raoux, File)