If you're in space on the way to Mars, and a conflict develops... you can't turn around and go back, because Earth is already gone on its orbit.

I'm a true believer in the strength of teamwork, in the power of dreams.

I'm a true believer in the strength of teamwork, in the power of dreams, and in the absolute necessity of a support structure.

We sleep very well in space. We have a sleeping bag each, and when you get into it, you float in the sleeping bag.

Logic is the last scientific ingredient of Philosophy; its extraction leaves behind only a confusion of non-scientific, pseudo problems.

Learn about the world, the way it works, any kind of science and anthropology, it's really an interesting place we live in. Evolution is a really fantastic idea, even more than the idea of God I think.

The California Science Center is a cornerstone in California's push to educate and encourage students to reach their full potential and to pursue careers in science and engineering.

The cosmos is three times as old as Earth. During most of creation's 14 billion year history, our solar system wasn't around. Nonetheless, the early universe still had the right stuff for life, and contained worlds that were just as suitable for spawning biology and intelligence as our own.