The drills we do, where you're telling kids to memorize things, don't actually work. What works is engaging them and letting them do things and discover things.

You have to actually be weighted to something to do the moonwalk, you know.

As an astronaut, you have a very defined set of tasks to do. Those tasks may require you to work 60, 70 or 80 hours a week.

When I left NASA, I was looking at how you could use space technologies for developing countries' work.

For me, it was really a childhood dream coming true. It's sort of where the fantasy led reality, and then I got to be on the Starship Enterprise anyway. And the cool thing was - is I was the only person on this bridge who had actually been in space.

We look at science as something very elite, which only a few people can learn. That's just not true. You just have to start early and give kids a foundation. Kids live up, or down, to expectations.