"“What we do not know about human physiological limitations hinders our ability to plan a human exploration campaign beyond LEO,” the team said in their paper. “The most limiting factor that makes human space exploration a risky endeavor is strictly dependent on safety issues. Therefore, the principal barriers to human exploration far from LEO are those given by the limits of medicine." - There will be no space race without space biosciences which also result in new marketable therapies and precision medicine for everyone on the ground.