What is the Aurora Borealis?
Aurora borealis, polar light, or northern lights is a collision between electrically charged particles. These particles blow from the sun to the earth by polar wind. This is followed by interactions between the gaseous particles from the earth with the charged particles released from the sun’s atmosphere.
As a result, these collisions, between the protons and electrons releases kinetic energy. Moreover, this energy emits as light in different colors. The different colors are green, blue, purple, yellow, white and red. Furthermore, these differences depend on the type of molecules as well as the distance from the earth at which the particles collide.
The most common color is a pale yellowish-green. Oxygen molecules at a location of about 100km above the earth atmosphere produce this yellowish-green colour. Additionally, red auroras are produced by high-altitude oxygen. This means at heights of up to 300kms above the earth’ atmosphere. While nitrogen gas produces blue or purplish-red auroras.
The Aurora Borealis shows up in various shapes. Such as arcs, patches, rippling curtains, as well as scattered clouds. Moreover the aurora can display for a few minutes to an entire night. Have a look at our pictures below. This is a small collection of the aurora that we can see from our the kennel, just south of Kiruna. The aurora photos are from the kennel and on our northern lights dogsledding trip and additionally at our wilderness lodge.