It’s short-sighted to think ads won’t one day end up wherever humans are - even the moon.

On Friday the 13th, April 2029, an asteroid large enough to fill the Rose Bowl as though it were an egg cup will fly so close to Earth that it will dip below the altitude of our communication satellites. We did not name this asteroid Bambi. Instead, we named it Apophis, after the Egyptian god of darkness and death.

Because we all just function, the rest of us, just go to work and come home; artists make life bearable. They give perspectives on things we never knew you could have. They bring joy. They explore inner human emotion, and at its best, the full dynamic range of that emotion.

Private enterprise can never lead a space frontier. It's not possible because a space frontier is expensive, it has unknown risks and it has unquantified risks.

The only accounting we had of the origins and the structure of nature was Biblical Genesis.

The StarTalks - while kids can watch them, they're actually targeted at adults. Because adults outnumber kids five to one, and adults vote, and adults wield resources, and adults are heads of agencies. So if we're going to affect policy, or affect attitudes, for me, the adults have always been the target population.

If you look at Einstein's equations and put in low speeds and low gravity, they become Newton's equations.