Nature is something exceptional and even more so for the northern lights tour guide Markus Varik, who for the first time in his entire career has witnessed the most radiant, brilliant natural phenomena with a peculiarity: pink. The Aurora borealis they occur because the sun particles interact with the magnetic field, this makes it look green and in different shades.
This visual spectacle, which took place in the municipality of Tromsø, happened because the solar storm –by which auroras are produced– had caused a crack in the invisible magnetic field that surrounds the Earth. That hole caused energetic particles to penetrate the planet’s atmosphere and trigger those pink northern lights.
NASA has explained that the northern lights appear when streams of charged particles of energy, known as solar wind, pass around the magnetosphere. The Earth’s magnetic field It shields us from cosmic radiation, but that shield is weakest at the north and south poles, allowing the solar wind to pass through the atmosphere, typically 100 to 300 kilometers above the surface. In this process, the gases are mixed and superheated, which glow intensely.
Normally, the auroras that appear in the photographs or that are seen are green, because the oxygen atoms, which abound right in the part of the atmosphere that the solar wind normally reaches, emit that tone when they are stimulated. However, during the phenomenon of Norwaythe crack in the Earth’s magnetosphere allowed the solar wind to penetrate below 100 kilometers, where nitrogen is the most abundant gas.
And that’s why the auroras gave off a neon pink glow when supercharged particles slammed into nitrogen atoms, as noted in this LiveScience article. In short, oxygen emits green and red light; and nitrogen glows blue and purple.