There might be very primitive life in our solar system — single-cell animals, that sort of thing. We may know the answer to that in five or ten years… - Sally Ride

It's easy to sleep floating around — it's very comfortable. But you have to be careful that you don't float into somebody or something!

It takes a few years to prepare for a space mission. It takes a couple of years just to get the background and knowledge that you need before you can go into detailed training for your mission. So most astronauts are astronauts for a couple of years before they are assigned to a flight. Once you are assigned to a flight, the whole crew is assigned at the same time, and then that crew trains together for a whole year to prepare for that flight.

When you're on Earth, if you go to the top of a mountain, the stars look much brighter than they do at sea level. And because the space shuttle is above Earth's atmosphere, it's like being on a very, very high mountain. So they look brighter, but not bigger.