Alexa stopNot since Carl Sagan, perhaps, has there been a professional stargazer as engaging and as popular as Neil de Grasse Tyson.

A witty, Charming personality who seems to know everything about astrophysics, Tyson has become a very popular TV host, public speaker, and podcaster.

I met him in 2000, when he wrote a book for the light person, not the professional scientist. Science literacy is Tyson's thing.