Pohjoismaisvalot

Pohjoismaisvalot, also known as the Northern Lights or Aurora Borealis, are 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 the Earth's atmosphere, primarily oxygen and nitrogen. These collisions transfer energy to the atmospheric gases, causing them to emit light. The colors of the aurora depend on the type of gas molecule that is excited and the altitude at which the collision occurs. Common colors include green, which is produced by oxygen molecules located about 60 miles above the Earth, and red, which is produced by oxygen molecules at higher altitudes. Less common colors like blue and purple are produced by nitrogen molecules. The aurora typically appears as curtains, arcs, or moving bands of light in the night sky. It is a popular tourist attraction in countries like Norway, Sweden, Finland, Iceland, and Canada, where it can be seen during the winter months. The Northern Lights are a natural wonder that has captivated humans for centuries, inspiring myths, legends, and scientific inquiry.