1Being exposed to radiation
2Blacking out during takeoff
3Burning up on re-entering the Earth's atmosphere
4Being hit by a meteor or smaller meteoroids
5Getting exposed to sharply edged moon dust
6Becoming separated from the ship during a space-walk
7Getting your spacesuit damaged during spacewalk
8Increased chance of developing bone loss, muscle loss and blood pressure changes after re-entering earth
9Increased chance of vision and hearing loss
11Crash landing on an airless planet
12Losing air and suffocating
