When these particles collide with gases in the Earth's environment, they make the colourful colors on the auroras, ranging from eco-friendly and pink to crimson and purple. The northern lights (aurora borealis) are produced by a cloud of electrically billed particles from a solar storm while in the earth's atmosphere. https://northern-lights-alaska11223.wikilowdown.com/6679417/not_known_details_about_northern_lights_what_are_they