What are the northern lights?
The northern lights, or Aurora Borealis, are one of nature’s most fascinating light displays. They occur when charged particles from the sun reach Earth’s atmosphere and collide with gases such as oxygen and nitrogen. This releases energy as light, which can form rippling bands, arcs and curtains across the night sky.
The northern lights are most commonly green, but the sky can sometimes glow in shades of red, blue or violet. The colours depend on which gases are affected and the altitude at which the light is produced.
The name Aurora Borealis has its roots in ancient mythology. Aurora was the Roman goddess of dawn, while Boreas was the Greek god of the north wind. Together, they form a fitting name for the colourful spectacle that sometimes appears in the sky over Skellefteå.