29.5K
Downloads
67
Episodes
Cosmic Controversy covers past and present issues in aerospace and astronomy with your host --- science journalist, Forbes contributor and ”Distant Wanderers: The Search for Planets Beyond the Solar System” author Bruce Dorminey.
Episodes
Saturday Jul 31, 2021
Saturday Jul 31, 2021
University of Chicago associate professor Dorian Abbot chats about his research on the controversial Snowball Earth Hypothesis. That is, the idea that at least twice in Earth’s geological past, our planet was basically a glacial ball of ice and snow. Abbot says it likely happened some 2 billion years ago and again some 600 to 800 million years ago. There's evidence for at least four such snowball events that likely persisted for tens of millions of years.
Comments (0)
To leave or reply to comments, please download free Podbean or
No Comments
To leave or reply to comments,
please download free Podbean App.