TIL that the Mercury Seven astronauts calculated that one of the seven would die during Project Mercury. Gus Grissom did die as an astronaut, albeit on the ground during Project Apollo.

https://en.wikipedia.org/wiki/Mercury_Seven
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1vmdqvo/til_that_the_mercury_seven_astronauts_calculated/