There's been another stunning display of the Northern Lights in Finland as atmospheric conditions on the sun fuelled another breathtaking night sky.
In Rovaniemi, just south of the Arctic Circle, the heavens were green for much of Monday evening, occasionally exploding into rolling waves of colour that lit up the night.
It was the eighth time in 10 days that the Northern Lights have been seen n the area, with local stargazers ascribing the event to a high coronal hole on the surface of the sun, coupled with strong solar winds.
The natural light show is the result of collisions between electrically charged particles from the sun that enter the earth's atmosphere.
The phenomenon is known as aurora borealis, or the Northern Lights, in the northern hemisphere and as aurora australis, or the Southern Lights, in the southern hemisphere.
