Carl Edward Sagan ( November 9, 1934 – December 20, 1996) was an American astronomer, cosmologist, astrophysicist, astrobiologist, author, science popularizer, and science communicator...
Carl Sagan Development
Carl Sagan Learning
Imagination will often carry us to worlds that never were. But without it we go nowhere. Carl Sagan
Imagination will often carry us to worlds that never were. But without it we go nowhere.