Carl Sagan was born to Jewish parents in Bensonhurst, Brooklyn, NY. He was an American astronomer, cosmologist, astrophysicist, astrobiologist, author, science popularizer, and science communicator in astronomy and other natural sciences.

His best known scientific contribution is research on extraterrestrial life. Sagan assembled the first physical messages sent into space: the Pioneer plaque and the Voyager Golden Record, universal messages that could potentially be understood by any extraterrestrial intelligence that might find them.

He is world-famous for writing popular science books and for co-writing the award-winning 1980 television series Cosmos: A Personal Voyage. He wrote the novel Contact, the basis for the 1997 film of the same name starring Jodie Foster.

Sagan believed that the Drake equation suggested that a large number of extraterrestrial civilizations would form, but that the lack of evidence of such civilizations the (Fermi Paradox) suggests that technological civilizations tend to destroy themselves rather quickly. Sagan also played a prominent role in the U.S. space program, with his involvement in the Mariner, Viking, and Voyager spacecraft expeditions.

Quote: An extraterrestrial visitor examining the differences among human societies would find those differences trivial compared to the similarities. Our lives, our past and our future are tied to the sun, the moon and the stars. We are star stuff harvesting star light.

Chaos Never Dies Day takes the stance that the perfect quiet moment we're all striving for doesn't exist and likely never will in a bipolar (physical) reality. In physics, chaos is the unpredictability of a forecast that increases exponentially over time. Chaos Theory (Mathematics, More ...)

CNN: Trump's regrets on immigration enforcement, and other takeaways from his 60 Minutes interview - - CBS Transcript