Carl Sagan (1934–1996) was an American astronomer, cosmologist, astrophysicist, and author best known for popularizing science and astronomy through his numerous books, TV series, and public appearances. He played a significant role in advancing our understanding of the cosmos, including his work on planetary science and the search for extraterrestrial life. Sagan was a prolific writer, winning a Pulitzer Prize for his book "The Dragons of Eden." He co-wrote and presented the award-winning television series "Cosmos: A Personal Voyage," which inspired a generation of scientists and science enthusiasts. Sagan's passion for science and his ability to communicate complex ideas in a clear and engaging way have left a lasting impact on science education and popular culture.