Did Carl Sagan ever smoked weed or did acid?

"Probably the most influential astrophysicist and cosmologist in history, Carl Sagan not only smoked but advocated use of marijuana in his 1971 book Marijuana Reconsidered."

Yeah i think hes the guy who accidently solved a math problem while high that he could never solve while sober.

Nah, probably just ground up and snorted moon rocks and chugged Zima.

Probably. I could see him trying it out of curiosity at least.

He might have explored a pale blue dot or two.

That dude rolled one hulluva fatty

He lived in Ithaca, there is a fair chance he did.