Karl was trying to figure out how many civilizations there were in the galaxy we lived in. And he concluded that they destroyed themselves very quickly. As soon as they developed the understanding of atoms and the energy that send mass, they would start fighting amongst themselves and destroy their civilizations. We think it would be so dark at the surface of the earth that od be like a moonless night. Human beings would barely beve as daylight would be like amoonless night.
Are advanced civilizations doomed to destroy themselves? Neil deGrasse Tyson and Chuck Nice explore the Cold War, The Drake Equation, and nuclear winter hypothesis with producer of Cosmos and Carl Sagan’s widow Ann Druyan and atmospheric scientist Brian Toon.
NOTE: StarTalk+ Patrons can watch or listen to this entire episode commercial-free here: https://startalkmedia.com/show/nuclear-winter-with-ann-druyan-and-brian-toon/
Photo Credit: United States Department of Energy, Public domain, via Wikimedia Commons
Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to new episodes ad-free and a whole week early.