Episode 10

This episode was all about how the universe evolved. Sagan starts by explaining the big bang and how we should think of it not as an explosion but more like a rapid expansion of matter and how nothing existed before the big bang. He then explained how some strange occurrences in the solar system form, like quasars and galactic collisions. He then delved into how the universe as a whole might be structured, with the leading theory being that galaxies are clustered along strands of higher concentrations of dark matter.