Prof. Carl Sagan
@ProfCarlSagan • 72,419 subscribers
Tribute to the man who taught us skepticism, critical thinking, and a sense of wonder for the natural world.
Shorts
Videos
Right Now, most of the American can relate to this message from the 90's.
Prof. Carl Sagan938,121 Aufrufe • vor 1 Jahr
Stephen Fry responds to a Question; What would he say if he met the God at the Gate?
Prof. Carl Sagan535,217 Aufrufe • vor 10 Monaten
Carl Sagan in 1990 with a very compelling argument still relevant today.
Prof. Carl Sagan122,164 Aufrufe • vor 2 Monaten
American chemist Wallace Carothers discovered nylon in 1935 while leading research at DuPont. His goal was to create synthetic "superpolymers" with protein-like structures to emulate or replace natural silk. During his 1976 Christmas Lectures, George Porter amazed children in the audience by making nylon right there in the lecturessolved theatre. ( 🎥 Royal Institution (now on Bluesky) )
Prof. Carl Sagan370,191 Aufrufe • vor 10 Monaten
Carl Sagan explained in his 1977 Christmas Lectures that Earth's initial hydrogen-rich atmosphere was lost to space because Earth's gravity was too weak to hold onto the light hydrogen atoms, which could easily achieve escape velocity. This allowed the atmosphere to evolve into the second, more stable composition (rich in volcanic gases like CO2, methane, etc.) before oxygen became dominant.
Prof. Carl Sagan200,181 Aufrufe • vor 10 Monaten
There are mainly two kinds of dangerous in our society, Carl Sagan nailed it long ago...
Prof. Carl Sagan161,805 Aufrufe • vor 1 Jahr
Do you agree with Carl Sagan? (🎥Source; CarlSaganDotCom )
Prof. Carl Sagan176,513 Aufrufe • vor 1 Jahr
