The study mentions 7. Probably other died before and were excluded from the sample: https://en.wikipedia.org/wiki/List_of_Apollo_astronauts#Apollo_astronauts_wh

The study mentions 7. Probably other died before and were excluded from the sample: https://en.wikipedia.org/wiki/List_of_Apollo_astronauts#Apollo_astronauts_who_walked_on_the_Moon https://en.wikipedia.org/wiki/List_of_Apollo_astronauts#Apol... E.g. Pete died from motorcycle accident at age 69: https://en.wikipedia.org/wiki/Pete_Conrad https://en.wikipedia.org/wiki/Pete_Conrad