Astronaut Quotes and aphorisms about fact Sally Ride Buzz Aldrin John Glenn Mae Jemison Alan Shepard Edgar Mitchell Edgar Mitchell ,, The best experience that we have on Earth is the fact that we have scientific stations, weathering ... Valentina Tereshkova Peggy Whitson ,, Life in zero gravity is hard to simulate. We practice on the ground what we call 'the day in the li... John L. Phillips