Only by studying large numbers of people can we figure out, are astronauts dying at a higher rate of cancer, and what types of cancers, than other people? John M. Grunsfeld Read Quote
When people left on the Oregon Trail from St. Louis, they knew that only a fraction of them would make it to the West Coast. But they went anyway. John M. Grunsfeld Read Quote
I think it’s really a sign of great American strength that we do invest the money we do in technology, in these hard projects, in NASA. John M. Grunsfeld Read Quote
The things I like to do involve a lot of mental focus, a combination of physical and mental challenge. That is what mountain climbing is. John M. Grunsfeld Read Quote
After my spacewalks, I am quite exhilarated but also tired, similar to a workout on Planet Earth. John M. Grunsfeld Read Quote
I don’t particularly want to jump out of an airplane with a parachute if I don’t have to. I don’t want to go bungee jumping. I like adventure with a real purpose that I can buy into. John M. Grunsfeld Read Quote
When I grew up on the south side of Chicago, it was kind of a rough neighborhood, and when my parents saw the prospect of my older sister going to middle school, high school, they decided that we would move to the north side of Chicago, Highland Park, and for me, that was a whole new ballgame. John M. Grunsfeld Read Quote
