Cosmos: A Personal Voyage
Episode 04 - Heaven and Hell. Carl Sagan discusses comets and asteroids as planetary impactors, giving recent examples of the Tunguska event and a lunar
impact described by Canterbury monks in 1178. It moves to a description of the environment of Venus, from the previous fantastic theories of people such as
Immanuel Velikovsky to the information gained by the Venera landers and its implications for Earth's greenhouse effect.
(from wikipedia.org)
| Episode 04 - Heaven and Hell |
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