Could it all be a hoax? Maybe it's a massive joke, but all kinds of Norwegian news sites are reporting on it. According to NKR—Norway's national TV channel—it could be related to a rocket fired from a Russian submarine in the White Sea. The Russians are denying any part on it at this at the moment. Nick Banbury, a witness located at Harstad, described how it all happened:
We are used to seeing lots of auroras here in Arctic Norway, but on my way to work this morning I saw something completely unexpected. Between 7:50 and 8:00 a.m. local time, there was a strange light in the sky. It consisted initially of a green beam of light similar in colour to the aurora with a mysterious rotating spiral at one end. This spiral then got bigger and bigger until it turned into a huge halo in the sky with the green beam extending down to the earth.
via Giant Mysterious Spiral Takes Over the Skies of Norway – Giant Spiral – Gizmodo.




