revontuleita

Revontuleita, also known as the Northern Lights or Aurora Borealis, is a natural light display predominantly seen in the high-latitude regions near the Arctic and Antarctic. The phenomenon is caused by the collision of charged particles from the sun with Earth's atmosphere, primarily in the thermosphere. These particles, known as solar wind, are deflected towards the polar regions by Earth's magnetic field. Upon entering the atmosphere, they excite oxygen and nitrogen molecules, causing them to emit light. The colors of the aurora are determined by the type of gas molecule being excited and the altitude at which the collision occurs. Green is the most common color, produced by oxygen molecules located about 60 miles above the earth. Red auroras are generated by high-altitude oxygen, at heights of up to 200 miles, while nitrogen produces blue or purplish-red auroras. The aurora is typically visible in the night sky, although it can sometimes be seen during daytime. The best time to view the aurora is during the equinoxes, when the Earth's magnetic field is most aligned with the sun's magnetic field. The intensity and frequency of revontuleita can vary greatly, influenced by solar activity and geomagnetic storms.