http://www.utdallas.edu/~pujana/oceans/mag.html  

Inside a particle accelerator, two high-energy particle beams travel at close to the speed of light before they are made to collide. The beams travel in opposite directions in separate beam pipes – two tubes kept at vacuum. They are guided around the accelerator ring by a strong magnetic field maintained by electro magnets. 

Geomagnetic storms are large disturbances in the Earth's magnetic field. They are caused by solar winds that produce changes in currents, plasmas, and fields in the magnetosphere. Large storms are associated with Coronal Mass Ejections where large amounts of plasma releases from the sun and arrives on earth, still carrying its magnetic field. Although Geomagnetic storms are associated with mostly negative impacts, they do create spectacular aurorae. 

Through convention centers in the sun, magnetic fields generate. Sometimes, strong magnetic fields extend outside of the sun's surface and ejects plasma in a solar storm. The storm brushes past Mercury and Venus, but impacts earth differently because of its magnetic field. The fields couple together and sends streams of gas onto the poles to create daylight aurora. As the solar storm passes, the couplings break and again sends streams of gas onto the poles to create the more commonly known night aurora.