Valentina Tereshkova

There was a lake beneath me, but the big, heavy parachute which had to be opened two miles above the ground couldn't be steered. My first thought was, 'Lord, they send just one woman into space, and she has to end up in the water.'

Ironically, it is only when disaster strikes that the shuttle makes the headlines. Its routine flights attracted less media interest than unmanned probes to the planets or the images from the Hubble Telescope. The fate of Columbia (like that of Challenger in 1986) reminded us that space is still a hazardous environment.

As an astronaut, when you're getting ready to go out of that hatch, you know that's the pinnacle of both your career and your life. The view completely blows you away. The real challenge is getting past the excitement and getting focused and down to work.