The Edge of Forever

The Edge of Forever is the tenth episode of Cosmos A Personal Voyage. It first aired 30 November 1980 on PBS.

Summary
Beginning with the origins of the Universe in the Big Bang, Carl Sagan describes the formation of different types of galaxies and anomalies such as galactic collisions and quasars. He gives ideas about the structure of the Universe, such as different dimensions in the imaginary Flatland and four-dimensional hypercubes, an infinite vs. a finite universe, and the idea of an oscillating Universe. The search into other ideas such as dark matter and the multiverse is shown, using tools such as the Very Large Array in New Mexico.

Cosmos Update
New information about the odd, irregular surfaces of galaxies and the Milky Way perhaps being a barred spiral galaxy is presented.