As areas of knowledge grow, so too do the perimeters of ignorance.

The show [ StarTalk ] was born as a radio program out of a National Science Foundation grant.

My only hope is that every other alien civilization isn't doing exactly what we are doing because then everybody would be listening, nobody would be receiving, and we would collectively conclude that there is no other intelligent life in the universe.

All the great advances in cinema came about from technology. The 3-D camera was not invented by a movie director. The new industries are driven by the innovations in science and technology.

Also, where does your identity come from? Your memory, of course.

Next time you're stunned by a large moon on the horizon, bend over and view it between your legs. The effect goes away entirely.

We in astrophysics we think of the universe all the time. So to us, Earth is just another planet. From a distance, it's a speck. And I'm convinced that if everyone had a cosmic perspective you wouldn't have legions of armies waging war on other people because someone would say, "Stop, look at the universe."