What was Carl Sagan's most famous television series?

Carl Sagan's most famous television series was Cosmos: A Personal Voyage. The 13-part PBS series premiered in 1980, with Sagan serving as writer, host, and narrator. It introduced millions of viewers to astronomy, evolution, the history of science, and the scale of the universe through vivid storytelling and visual effects.

Cosmos was inspired partly by Jacob Bronowski's The Ascent of Man and was filmed in locations ranging from laboratories to ancient archaeological sites. Its famous “Ship of the Imagination” gave Sagan a memorable way to travel through space and time while explaining difficult scientific ideas in accessible language.

The program became one of the most widely watched series in the history of American public television and won both an Emmy and a Peabody Award. It also produced a companion book, Cosmos, which became a major bestseller. A common mix-up is confusing the series with Nova, another well-known PBS science program, or with Star Trek, a fictional space-adventure franchise.