Photography: Tor Even Mathisen
Music: Per Wollen
Vocal: Silje Beate Nilssen
Auroras are associated with the solar wind, a flow of ions continuously flowing outward from the Sun.
The Earth's magnetic field traps these particles, many of which travel toward the poles where they are accelerated toward Earth.
Collisions between these ions and atmospheric atoms and molecules cause energy releases in the form of auroras appearing in large circles around the poles.
Auroras are more frequent and brighter during the intense phase of the solar cycle when coronal mass ejections increase the intensity of the solar wind.
Green or brownish-red, depending on the amount of energy absorbed.
Blue or red. Blue if the atom regains an electron after it has been ionized. Red if returning to ground state from an excited state.
The stars are putting on their glittering belts. They throw around their shoulders cloaks that flash Like a great shadow's last embellishment
The Valkyrior are warlike virgins, mounted upon horses and armed with helmets and spears. When they ride forth on their errand, their armour sheds a strange flickering light, which flashes up over the northern skies