PRESIDIO - A science project by three presidio high school students will be launched into space in September.
The experiment will test how being in space can affect the body.
Microgravity has been shown to cause calcium loss in the bones, meaning most astronauts come back with bones resembling those of someone much older.
The experiment is designed to determine whether astronauts need to be taking supplements to help with digestion and to prevent bone loss.
Only 11 projects were picked out of more than 1,100 proposals.