The axis of the Earth is a line running from the North Pole, through the Earth, to the South Pole. That's pretty much how the magnetic poles run, too. A magnet creates looping lines of force around it. In the same way, the Earth has a magnetic field around it. This is like a big shield that bounces the solar wind away, or deflects it around the Earth.
Scientists think Mars once had oceans and an atmosphere.
The same thing happened to all the water on Venus. The Aurora Right at the North Pole and South Pole, some of the solar wind particles create beautiful lights in the sky. Earth's magnetosphere is interesting to study, and it certainly protects all of us living on the surface. By learning more about it, we understand better how our planet works. High above the poles the particles and energy of the solar wind can find their way into the magnetosphere.