Causes Of Aurora Borealis May 2024. Green aurora is caused by solar particles interacting with oxygen at altitudes between 100 and 300 kilometers (62 to 186 miles). The energetic radiation can ionise atoms in the earth’s upper atmosphere and cause it to puff up.

In the second half of 2024, a nova explosion in the star system called t coronae borealis, or t crb, will once again be visible to people on earth. Increased solar activity causes auroras that dance around earth’s poles, known as the northern lights, or aurora borealis, and southern lights, or aurora australis.