At the beginning of this cosmic journey across space and time, Dr. Carl Sagan takes us to the edge of the universe ab...

Dr. Sagan's cosmic calendar makes the history of the universe understandable and frames the origin of the Earth and t...

This episode is a historical re-creation of the life of Johannes Kepler, the last scientific astrologer, the first mo...

A descent through the hellish atmosphere of Venus to explore its broiling surface serves as a warning to our world ab...

Is there life on Mars? Dr. Sagan takes viewers on a tour of the red planet first through the eyes of science fiction ...

Dr. Sagan compares the exhilaration of 17th-century Dutch explorers who ventured in sailing ships halfway around our ...

Humans once thought the stars were campfires in the sky and the Milky Way "the backbone of night." In this fascinati...

A voyage to see how star patterns change over millions of years is followed by a journey to the planets of other star...

Using computer animation and amazing astronomical art, Dr. Sagan shows how stars are born, live, die and sometimes co...

Dr. Sagan leads us on some awesome trips — to a time when galaxies were beginning to form, to India to explore the in...

The brain is the focus of this fascinating portion of our journey as Dr. Sagan examines another of the intelligent cr...

Are there alien intelligences? How could we communicate with them? What about UFOs? The answers to these questions ta...

Through the use of special effects we retrace the 15-billion-year journey from the big bang to the present. We also h...