Carl Edward Sagan (November 9, 1934 – December 20, 1996) was an American astronomer, cosmologist, astrophysicist, astrobiologist, author, science popularizer, and science communicator in astronomy and ...

Encyclopedia Galactica is the compilation of a series of paintings by award-winning artist Jon Lomberg, in collaboration with the late astronomer and science popularizer Carl Sagan. Below is the story ...

Early in 1993, a manuscript landed in the Nature offices announcing the results of an unusual — even audacious — experiment. The investigators, led by planetary scientist and broadcaster Carl Sagan, ...