Carl Sagan, Carl Edward Sagan Biography and Profile, cosmologist, astrophysicist, astrobiologist, author, astronomer

Carl Edward Sagan was born on Nov. 9, 1934, in Brooklyn, New York. He attended college at the University of Chicago, where he earned his Ph.D. in astronomy and astrophysics in 1960, at the age of 26. Read Carl Sagan Biography and Profile. Read more