Carl Edward Sagan (/ ˈseɪɡən /; SAY-gən; November 9, 1934 – December 20, 1996) was an American astronomer, planetary scientist and science communicator.

Dec 16, 2025 · Carl Sagan, American astronomer and science writer. A popular and influential figure in the United States, he was controversial in scientific, political, and religious circles for …

Nov 4, 2024 · Carl Sagan (1934 – 1996) played a leading role in the American space program from its very beginning. He was a consultant and adviser to NASA beginning in the 1950s — …

A Pulitzer Prize winner, Dr. Sagan was the author of many bestsellers, including Cosmos, which became the best-selling science book ever published in the English language. The …

In keeping with many of his mentors, Sagan felt it was necessary for scientists to be active and engaged participants in civil society. Carl Sagan's science was publicly minded and engaged. …

Sagan was propelled on his academic and public careers by a wealth of talent, a large share of good luck, and an intensely focused drive to succeed. His lifelong quest was to understand the …

Nov 13, 2024 · Read on in Cornellians for 14 fascinating facts about Sagan—one of Cornell’s most famous faculty members, and one of the most effective science communicators of all …