The difference between the dinosaurs and us is that we have a space program and we can vote...

However, science isn't just about showing when you're right; it's also about showing when you're wrong.

Just like people, stars can be important without being terribly bright.

Welcome to science. You’re gonna like it here.

Sometimes, even by accident, the universe makes beauty, and we can stand back in awe of it. Even better - we can figure out why. Science! I love this stuff.

If a little kid ever asks you just why the sky is blue, you look him or her right in the eye and say, 'It's because of quantum effects involving Rayleigh scattering combined with a lack of violet photon receptors in our retinae.'

If you took every nuclear weapon ever built at the height of the Cold War, lumped them together and blew them up at the same time, that would be one one-millionth of the energy released at that moment.