“This is a really big space station. We do a lot of various kinds of work here, different kinds of science experiments; we have over 400 different experiments going on at any one time in different a...”

“If you go on a journey to Mars and get into deep space, there is several hundred times, maybe 300 times the radiation.”

“We don't do laundry because that requires a lot of water, and water's at a premium up here. Plus, it'd be pretty complicated, I think, to make a space washer, although I guess you could do it.”

“People do really well on space missions, but it's the physiological, the medical stuff, the stuff like radiation, loss of bone mass and muscle mass and density. It's those things that we need to fi...”

“The calluses on your feet in space will eventually fall off. So, the bottoms of your feet become very soft like newborn baby feet. But the top of my feet develop rough alligator skin because I use ...”

“The majority of astronauts have to change their eyeglasses while in space. They bring eyeglasses with them and typically change a few months into the mission.”

“Lost Time is never found again.”

“How you spend your time is more important than how you spend your money. Money mistakes can be corrected, but time is gone forever.”

“Men talk of killing time, while time quietly kills them.”

“We fly, but we have not 'conquered' the air. Nature presides in all her dignity, permitting us the study and the use of such of her forces as we may understand. It is when we presume to intimacy, h...”

“People have to forgive. We don't have to like them, we don't have to be friends with them, we don't have to send them hearts in text messages, but we have to forgive them, to overlook, to forget. B...”

“Q: You'er presented with a smooth-faced, eight-foot-high wooden wall. Your objective? Get over it. To, like, save comrades or something. How to accomplish this?A: Take a running start, brace one fo...”