Carl Sagan Quotes
Be grateful everyday for the brief but magnificent opportunity that life provides.
Citations
Sagan, Carl. Billions and Billions: Thoughts on Life and Death at the Brink of the Millennium. Random House, 1997.
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Carl Edward Sagan was an American astronomer, planetary scientist, cosmologist, astrophysicist, astrobiologist, author, and science communicator. His best known scientific contribution is research on extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by radiation. Sagan assembled the first physical messages sent into space: the Pioneer plaque and the Voyager Golden Record, universal messages intended to be understood by any extraterrestrial intelligence that might find them.