Carl
Sagan, a professor of Astronomy and Space Sciences at Cornell
University, is best known for his award-winning 1980 PBS television
series, Cosmos, which has been seen by more than half a
billion people in over 60 countries, and helped inspire an entire
generation to marvel at the mysteries of the universe. Professor
Sagan played a major role in the development of the American space
program right from its start, and helped to solve many planetary
mysteries that puzzled scientists. Carl Sagan is also known for
his outspoken concern about social issues. He felt one of the
most crucial issues facing humanity's future was the potential
and consequences of nuclear war, and strongly advocated to end
the nuclear arms race.
