Sep 11, 2024
Rocky Planet Magnetism
In the previous post, I asked, “Where are the aliens?” Technological aliens have to come from a rocky planet, and Earth is the only rocky planet in this solar system with magnetism. That raises the question, is a magnetic field necessary for life to evolve? To understand why only Earth has such a field, we have to better understand how it is generated. We believe it is due to the behaviour of…