Episode 418
Snowball Earth was Cold and Scary and the Milky Way Magnetic Field is a Mess
Walkabout the Galaxy · Josh Colwell, Addie Dove, Jim Cooney, Audrey Martin
February 18, 202646m 28s
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Show Notes
The Earth spent some crazy amounts of time (tens of millions of years) completely frozen over. And not, in the grand scheme of things, all that long ago. New research shows the ocean was salty and super-cold. How did life survive? New techniques using radio observations reveal a complicated and twisty galactic magnetic field. Join us for an icy, winter olympics themed episode to find out all this and more.