I think that people need an adrenalin rush. Folks need something aspirational; they need to do something that is hard. That's what ignites the imagination.

I think science fiction helps us think about possibilities, to speculate - it helps us look at our society from a different perspective. It lets us look at our mores, using science as the backdrop, as the game changer.

Some people say they feel very small when they think about space. I felt more expansive, very connected to the universe.

I believe the biggest impediment we have right now with going to Mars is public commitment. More people need to see themselves as a part of space travel; we need to see more inclusiveness.

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

My perspective is the Earth will be here. It just may not be habitable to our life form. We get confused. We think we're the center of everything.