Auroras are lights that appear at earth’s northern and southern poles. what is the main cause of an aurora?
When charged particles from the sun strike atoms in Earth's atmosphere, they cause electrons in the atoms to move to a higher-energy state. When the electrons drop back to a lower energy state, they release a photon: light. This causes the aurora to appear.
Answer:
The main cause of an aurora is that Solar wind enters Earth’s atmosphere, and particles interact with ions.
Explanation:
The aurora is the result of collisions between gaseous particles in the Earth's atmosphere when they come with charged particles releasing from the sun's atmosphere. This is a very popular spectacle due to the variety of colors that we can see among this lights are also caused by the different chemicals, for example, pale yellowish-green is produced by oxygen, red is produced by high-altitude oxygen, and blue or purplish-red by nitrogen.