A nice video of Northern Lights is on YouTube:
Some infos about the sun and Aurora you can find here:
Its really fascinating hearing aurora signals via reflections on the Northern Light
(distorted by Doppler).
Sorry - did not find my own recordings on cassettes anymore!
Located in mid latitude we can use Aurora only very seldom.
My first 144 MHZ Aurora QSOs are back into 1980.
My main Aurora activity was 1982.
1982 we had a very big Aurora, so even we in mid latitude could work into Italy (I4XCC).