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 …

Dec 18, 2025 · Why Carl Sagan Was Way Ahead Of His Time And The Legacy He Left Behind “What is essential for this problem is a global consciousness [...] that transcends our exclusive …

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. …

Carl Sagan (1934-1996), American planetary astronomer, exobiologist, popular educator, and advocate for science. Portrait of Carl Sagan courtesy of Andy Levin/PARADE.

Nov 11, 2024 · Read on for 14 fascinating facts about Sagan—one of Cornell’s most famous faculty members, and one of the most effective science communicators of all time! His …