How the northern and southern auroras are created

The auroras are a natural phenomenon that fascinates many. We know what they look like and where they can be seen, but do we know why they form?

Iceland is a popular tourist destination: its landscapes, culture and temperatures attract the attention of more and more tourists.

But why do people want to go to Iceland? To witness the phenomenon of the northern lights.

This natural phenomenon takes place only in the polar regions of the planet, hence its name: northern or southern auroras, depending on whether they occur to the north or south. What makes them even more interesting is how unusual they are, although there is a season in which it is possible to observe them, they remain an unlikely phenomenon. The aurora is a display of colored lights in the night sky, like a natural laser show.

Why are they so unusual?

Until recently, the nature of the Northern Lights was not known. Its existence depends directly on major astronomical events, specifically, storms and solar eruptions.

When a solar eruption occurs, electrically charged particles are released that penetrate the Earth’s magnetic field and collide with the atoms and molecules of our atmosphere. This collision produces photons that form the aurora.

Depending on the elements involved in the collision, the auroras have different shades: oxygen produces red and green auroras, while hydrogen produces pink and purple auroras. The phenomenon usually occurs at an altitude of between 65 and 650 km, in the part of the sky that is known as the auroral oval.

Why do they occur in specific areas?

The best known places for their auroras are, among others, Canada, Denmark, Iceland or Norway. They occur in these areas because the particles released by the Sun are attracted by the magnetic fields of the poles.

Spread the love

Leave a Reply

Your email address will not be published. Required fields are marked *