"We start out a million years ago in a small community on some grassy plain; we hunt animals, have children and develop a rich social, sexual and intellectual life, but we know almost nothing about our surroundings. Yet we hunger to understand, so we...

One of the first scientists to take an active interest in the possibility that life exists elsewhere in the universe, and an astronomer was both a best-selling author and a popular television figure, Carl Sagan was one of the best-known scientists in...

The American astronomer and popularizer of science Carl E. Sagan (1934-1996) studied the surfaces and atmospheres of the major planets, conducted experiments on the origins of life on earth, made important contributions to the debate over the...

Born in 1934 in New York City, Carl Edward Sagan earned his bachelor's and doctoral degrees from the University of Chicago. He conducted research and lectured at the University of California in Berkeley and Harvard University. In 1970, he became the...

Born in 1934 in New York City, Carl Edward Sagan earned his bachelor's and doctoral degrees from the University of Chicago. He conducted research and lectured at the University of California in Berkeley and Harvard University. In 1970, he became the...