when I wrestled, I would set aside the time to wrestle, so that in my mind it didn't interfere with my study time. That helped me psychologically. When I'm wrestling, I'm not studying the universe. And when I'm studying the universe, I'm not wrestling.

It seems that we're better at finding someone to blame for our problems than we are at finding creative solutions to fix them.

Imagine a life-form whose brainpower is to ours as ours is to a chimpanzee’s. To such a species, our highest mental achievements would be trivial. Their toddlers, instead of learning their ABCs on Sesame Street, would learn multivariable calculus on Boolean Boulevard. Our most complex theorems, our deepest philosophies, the cherished works of our most creative artists, would be projects their schoolkids bring home for Mom and Dad to display on the refrigerator door.

No one with a living room radio that was a piece of furniture at the time would say, gee. I want to carry that around on my hip pocket. That was not a thought until NASA initiated this whole exercise. So there's an influence that's not just spinoff.

I never got into 'Star Wars.' Maybe because they made no attempt to portray real physics. At all.

Luckily, there are some rocks left over from our earliest days, asteroids formed during our solar system's birth. Occasionally, some of them drop in on Earth, and when they do, they're called meteorites.

Feeling a little small? Well, in the context of the cosmos, we are small.