An explorer of the universe is sexier than a musician.

Every carbon atom in every living thing on the planet was produced in the heart of a dying star.

In science, there are no universal truths, just views of the world that have yet to be shown to be false.

If people don’t have an understanding of what science is and what scientists do, then they can tend to think that global warming, for example, is just a matter of opinion.

We explore because we are curious, not because we wish to develop grand views of reality or better widgets.

(On the energy radiated by the Sun) It's four hundred million million million million watts. That is a million times the power consumption of the United States every year, radiated in one second, and we worked that out by using some water, a thermometer, a tin, and an umbrella. And that's why I love physics.

Skepticism must go hand in hand with rationality. When theories are shown to be false, the correct thing to do is to move on.