I can't think of anything specific growing up that pointed me toward NASA at all. I was interested in the Moon landings just about the same as everyone else of my generation. But I never really thought about being an astronaut or working in space myself.

Other than motherhood, the eight years that I spent at the University of Wisconsin, Madison, I have incredibly fond memories of. It's a beautiful place, with four seasons up in Wisconsin. And really wonderful people.

Some things are only capable of being done in space. Examples of that are looking at our Earth from that far away, and understanding the entire processes of storms and weather patterns, and oceans, and coastlines.

We're looking at Earth science, observing our planet. Also space science, looking at the ozone in the atmosphere around our Earth. Also looking at life science. And on a human level, using ourselves as test subjects.

For the most part I'll probably do floor exercise and balance beam. Those are the two things that I do.

It is time to stop the anarchy on the Internet. We cannot allow this great technological achievement of man to be turned into an information garbage heap.

On telly, there's been a move towards entertainment - with some very high-powered, fast-moving dramas. Then we have the Internet, where we get our information but it's all in bite-size pieces. I think the documentary, as a form, actually speaks to what's missing.

Whenever teenage girls and corporate CEOs covet the same new technology, something extraordinary is happening.