I get the point that earth has its magnetic field because of the iron and metal in its core. However, why does the sun have its magnetic field if there are only hydrogen?
I know only that it states some variations of the Sun's magnetic fields. What is the Rosenberg-Coleman effect specifically?
Although I've never seen it myself, I hear the northern lights are a sight to be seen! I know they're related to the Earth's magnetic field but I don't know much more about them. What is the physical ...