People and stars are made of the same stuff.

I say to the grown-ups, 'If you want to deny evolution and live in your world that's completely inconsistent with everything we've observed in the universe that's fine. But don't make your kids do it.'

You stop planetary exploration, those people who do that extraordinary work are going to have to go do something else.

I feel that I've often pointed out that there are countless aspects of life and nature that scientists and scientific thinkers cannot explain. Why the universe is accelerating in its expansion and what came before the Big Bang serve as compelling examples. The process of science provides a way to seek answers to those questions.

Everyone, red state, blue state, everyone supports space exploration.

Science is the key to our future, and if you don't believe in science, then you're holding everybody back.

As you may know, I am a mechanical engineer.