Auroras are the result of the interaction between high-energy particles from outside the atmosphere and atoms in the upper atmosphere, which often occur around the earth's magnetic pole. it is now known that, as a part of the solar wind, when high-energy particles arrive near the earth, it is captured by the earth's magnetic field and falls toward the magnetic pole. They collide with oxygen and nitrogen atoms, knocking out electrons to make it excited ions, which emit radiation at different wavelengths, producing auroral characteristic colors such as red, green or blue.
wrong?
The solar wind self-discharges the aurora in the upper atmosphere