how do they measure auroras
Auroras are indicators of the connection between the Earth and the sun. The frequency of auroras correlates to the frequency of solar activity and the sun's 11-year cycle of activity.As the process of fusion occurs inside the sun, it spews high-energy particles (ions, electrons, protons, neutrinos) and radiation in the solar wind. When they hit the ionosphere region of the Earth's upper atmosphere, they collide with ions of oxygen and nitrogen. 2  The particles impact the oxygen and nitrogen ions and transfer their energy to these ions.