My very first post about two and a half years ago was about Hessdalen. The point, as I recall, is that Hessdalen is a pretty well documented phenomenon since at least the 80's with clumps of sightings around certain years. I was hoping to get someone on to address or at least be knowledgeable of Hessdalen or other Earth light phenomenon. I can't remember the professor who undertook the original study, but it can be easily found with a little search.
This type of phenomenon is found throughout the world in certain places and to me it represents some kind of poorly or not understood at all phenomenon. Researchers in the UFO field seem to be quite reluctant to even discuss it. And this is of course that the phenomenon doesn't represent the "fantastic" (aliens). If you look at the observations from Hessdalen we see different colors, different formations, some floating down valleys, some appearing and reappearing, some bright, some dimming, and so on. The lights at Hessdalen can't even be adequetely described in a few words because it changes each time. Even so, it never, to my knowledge, seems to represent aliens and isn't even definitive if there is any intelligence involved at all. Not a very capturing story when "others" aren't involved. So, in turn, many people just ignore it.
I think it is important to keep this type of enigmatic phenomenon in mind when discussing UFO's because it might explain some sightings. And we don't find it just in Norway. We find similar stuff around the globe. Take for example the Iran 1976 case. What we see is a great ball of light that breaks up, "approaches", reconnects, and goes away ultimately. This is the same type of thing that has been observed with the Hessdalen lights. What I am getting at is that maybe our perception of what is happening is not equal to what is really happening. What if the Iran affair was due to some naturalistic force that we percieved of as "intruders" or "aliens" just because it appeared to act like it?? What if it was some type of force, unintelligent, that we are just ignorant of?? I'm not even saying Iran was something like this, but there are lots of reports of similar phenomena that are strikingly familiar in light of Hessdalen. But that would mean it isn't quite as fantastic as we concieve it to be. I say, oh well, the truth might not be as sensational as we think, .... at least in some circumstances. It's only intellectually honest if we keep more mundane possibilities in mind, and I think the Hessdalen phenomenon might be something close to that.
It doesn't explain everything, that is for sure, but I find it interesting and a little disappointing that it is never even mentioned as a possibility especially considering the documentation of such anomalous lights.
All that said, the swirling lights doesn't look like anything associated with the Hessdalen phenomena. It looks like something going up or down in cold weather, possibly a rocket, I don't know.