DEAD: ON THIS DATE

DEAD: ON THIS DATE –Carl Sagan (aged 62)-American astrophysicist, cosmologist, author and science educator –Carl Edward Sagan (/ˈseɪɡən/; November 9, 1934 –December 20, 1996) was an American astronomer, cosmologist, astrophysicist, astrobiologist, author, science popularizer, and science communicator in astronomy and other natural sciences. He is best known for his work as a science popularizer andContinue reading DEAD: ON THIS DATE