Olivier Hernandez is an astrophysicist and director of the Montreal Planetarium
When activity increases, the surface of the sun is expelled into space, protons and electrons wander around the universe. In principle, the Earth's magnetic field protects us from this, but at the poles, these particles can descend into the atmosphere, which creates the northern lights, explains Olivier Hernandez, astrophysicist and director of the Montreal planetarium.
We're in about year 9 of the cycle, which is about 11 years. For the next two years, solar flares will be more and more frequent and the intensity will be greater, explains Mr. Hernandez.
In latitudes where we are not used to see more and more.
A quote from Olivier Hernandez, astrophysicist
To know when an aurora borealis will occur, you have to look at two components. The first, the KP index which measures the magnetic field. For the aurora to be visible in southern regions, the index must be greater than 4 or 5. The other indicator is the BZ index, which must indicate south and therefore be negative.