“For me at age 11, I had a pair of binoculars and looked up to the moon, and the moon wasn't just bigger, it was better. There were mountains and valleys and craters and shadows. And it came alive.”

American astrophysicist and science communicator of the late 20th and early 21st centuries, he bridges complex cosmic concepts for broad audiences. His work on the Cosmos television series and public lectures makes astronomy accessible, while his writings and media appearances champion evidence-based reasoning and critical thinking.