[Q&A] Auroras in the South, Restarting Planets' Dynamos, Old People on Mars
Universe Today Podcast
00:00
The Great Attractor: A New Mystery
Riley Chadwell: There are many explanations for water where water on earth came from. He says the traditional idea is that water was delivered by comets over time, comment after comment crashed into the earth and delivered the water to us. Chadwell: The problem is that the earth is too close to the sun for water to have formed on our planet; we are within the frost line of the solar system.
Play episode from 33:26
Transcript
