Carl Sagan

cauchemar (25)in #cosmos • 8 years ago (edited)

The one and only! 0561-Carl Sagan (November 9, 1934 – December 20, 1996) was an American astronomer, astrophysicist, cosmologist, author, science popularizer, and science communicator.jpg 0562-Carl Sagan (November 9, 1934 – December 20, 1996) was an American astronomer, astrophysicist, cosmologist, author, science popularizer, and science c.jpg