This journey was undertaken based on the information found by reading multiple blogs, which together with the webcam images allowed us to decide in favor of Abisko.

Abisko, as part of Iceland, Greenland, Svalbard, Lofoten and Alaska, is located beyond the 66th parallel, that is, beyond the Arctic Circle.
In this area of ​​the planet there is the amazing phenomenon of the Northern Lights, which we personally define as the demonstration of the shield that protects the life of our home, the Earth.
These red-green-blue bands that form in the skies and dance in the night are caused by our sun.

But let's take a step back.

At every instant of its life, the sun expels matter from its crown, which minimally escapes its gravitational force, generating the famous solar wind. This sort of gigantic wave, filled with high-energy particles, heads towards space, where the planets of the solar system are located, including ours.

The Earth, unlike the desert Mars, has a liquid metallic core inside which generates a very strong magnetic field, called the Magnetosphere; this magnetic field creates a sort of shield resistant to solar radiation, allowing life on our planet.

It can sometimes happen that this "solar wave" is so intense that it is able to partially "pierce" the shield in the weakest points, which due to the spatial shape of our planet are located right at the poles.

These high-speed solar particles exceed the shield, and interacting with the particles present in the earth's upper atmosphere give rise to the spectacular northern (or southern) aurorae.

The color depends on which gases are present in the atmosphere and on the solar particles that strike them (generating different wavelengths): atomic oxygen forms the green color, the molecular one red, while nitrogen forms the blue.

Returning to us, to see the aurora two other fundamental conditions must be present: it must be dark and the sky must be clear of clouds.
Furthermore, you have to arm yourself with a lot of patience.
Abisko, being cloudless for most of the year as it is protected by mountains, is the place on the planet where the probability of seeing the Northern Lights is greatest.

And in fact we have seen it with our own eyes.

For two nights out of three, despite the principles of freezing feet (cover up well and ask the hotel where you reside the thermal suits!) We were bewitched by the colors of the Northern Lights. It did not help to go who knows where: it was enough to move slightly away from the few city lights to enjoy an incredible spectacle, the vital spectacle of our planet.