Spacesuits damaged the fingernails of 22 out of 179 U.S. astronauts studied, including 18 men and four women — but 27 of the 31 injuries happened not during spacewalks, but underwater in NASA’s giant training pool

Spacesuits damaged the fingernails of 22 out of 179 U.S. astronauts studied, including 18 men and four women — but 27 of the 31 injuries happened not during spacewalks, but underwater in NASA’s giant training pool

The space program's most common occupational injury isn't caused by launch or landing—it's what happens when astronauts spend too long in wet gloves.