Question

auroras are the lights that appear at earths northern and southern poles. what is the main cause of an Aurora

Answer 1

The answer to your question is,

Solar wind enters Earth’s atmosphere, and particles interact with ions.

-Mabel <3

Answer 2

As the particles pass through the Earth's magnetic shield, they mingle with atoms and molecules of oxygen, nitrogen and other elements that result in the dazzling display of lights in the sky.