Carl Sagan (1934 – 1996) was an American astronomer, cosmologist, astrophysicist and astrobiologist. He relentlessly sought for extraterrestrial life and was a great communicator who popularized science for generations of people.
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Carl Sagan (1934 – 1996) was an American astronomer, cosmologist, astrophysicist and astrobiologist. He relentlessly sought for extraterrestrial life and was a great communicator who popularized science for generations of people.