Return to the Moon • 2019

4:17

Carl Sagan talks about our future and the exploration of space

7/10 • The Sagan Series • 1989 • Astronomy

42:29

Black holes are not the violent monsters people think they are, and new discoveries reveal that they might have been essential to creating stars, giving light, and building the universe itself.

S7E4 • How the Universe Works • 2019 • Astronomy

26:27

Earth is the only home we've ever known, and it's treated us well so far. But whether it’s climate change, an apocalyptic asteroid, or some horrifying disaster we don’t even know about yet, the Earth won't live forever.

Astronomy

88:36

Luminous tells the story of the first astronomer in history to publicly predict the near-future explosion of a star--will he be right? Others in the astronomical community are skeptical, and professional reputations hang in the balance. In production for five years, Luminous follows Larry Molnar's journey to test an unprecedented prediction, knowing that its success or failure will unfold squarely in the international spotlight.

2022 • Astronomy

60:25

Carl Sagan opens the program with a description of the cosmos and a "Spaceship of the Imagination" (shaped like a dandelion seed). The ship journeys through the universe's hundred billion galaxies, the Local Group, the Andromeda Galaxy, the Milky Way, the Orion Nebula, our Solar System, and finally the planet Earth. Eratosthenes' successful calculation of the circumference of Earth leads to a description of the ancient Library of Alexandria. Finally, the "Ages of Science" are described, before pulling back to the full span of the Cosmic Calendar. Note: This revised version of the series adds an introduction by Ann Druyan, in which she discusses some of the changes that occurred in the years after its broadcast.

1/13 • Cosmos: A Personal Voyage • 1980 • Astronomy

45:58

Quantum theory, the best explanation of how atoms and anything smaller behave, is so weird even scientists who have mastered it find it baffling. But bit by bit scientists are finding maybe it's not so weird as comparable behavior is discovered in our every day world. It's just that no one noticed before.

S2E07 • Through the Wormhole • Astronomy