Update
02-26-2007
Content Type
Lesson
Grade Level
Ninth grade, Tenth grade, Eleventh grade, Twelfth grade
Object Type
Website
License

This page summarizes NASA research that concluded that astronauts lose about 11% of their bone mass over the course of a mission. This loss of density is comparable to what happens in elderly women, and research may help to find ways to solve the problem in both cases.