Carl Sagan

# Carl Sagan Astrophysicist, author, and the great communicator of science. Cosmos: A Personal Voyage, which he wrote and presented in 1980, remains the most-watched documentary series in the history of public television. He helped design the Pioneer plaques and the Voyager Golden Record — humanity's messages to the universe. He understood that wonder is not the enemy of rigor. He made the scale of the cosmos legible to anyone willing to look up, and in doing so reminded several generations of their astonishing, fragile place in it.