The Polar Aurora, well known as Aurora Borealis/Australis or Northern/Southern Lights depending on which hemisphere it occurs, is an optical phenomenon of the atmosphere, characterized by green, blue and red luminous bands with a different range of shapes.
The phenomenon, visible in two stripes around the magnetic poles and more intense and frequent during high solar activity, is caused by the interaction of charged electrons of the solar wind with the earth’s ionosphere (a process similar to the neon lamp light).
The color depends on the atmosphere’s gases: atomic oxygen is responsible for the green, the molecular oxygen for the red and nitrogen for the blue color.
Iceland: Kirkjufell, Reykjavik, Jökulsárlón Lake, Þingvellir National Park
Norway: Svalbard Islands, North Cape, Tromsø, Alta, Karasjok
Finland: Kakslauttanen Arctic Resort, Inari Lake, Sodanklya, Luosto
Sweden: Abisko National Park, Kiruna region
Alaska, USA: Fairbanks, Denali National Park, Juneau, Barrow, Coldfoot
Canada: Mucho Lake Provincial Park, Yukon, British Columbia, Yellowknife
Greenland: Kulusuk, Ammassalik, Kangerlussuaq
Fær Øer Islands
Russia: Kola Peninsula
Scotland: Caithness coast
Ireland: Donegal region, Malin Head, Antrim region
New Zealand: Stewart Island, Lake Tekapo, Aoraki Mt Cook National Park, The Catlins
Australia: Mount Wellington (Tasmania), Victoria
South Georgia Island