http://gizmodo.com/5422574/giant-mysterious-spiral-takes-over-the-skies-of-norway
This is a link to a series of several photos. (It was linked in one of the earlier FR threads).
One person said it happened from 7:30 to 8:00 A.M. In the photos near the horizon you can see the sun rising in the background. The higher-up photos are very dark. I wish they had a time sequence of the photos. The blue plume in the sunlight photos is just a hazy plume (no spiral).
I’m still leaning towards the out-of-control rocket theory - but lots of flaws in that it would seem. Mainly the perfect spirals. But, the photo sequence does tend to support a rocket.
This link from that site says rocket/missile.
http://gizmodo.com/5422792/this-is-how-the-mysterious-giant-spiral-happened
I'm leaning toward a electrical plasma caused phenomena... and I think it has been seen before—and much more frequently, in ancient mythology when it was called Bifrost, the bridge of the gods.
If you pause the first video released on YouTube near the end, you’ll see a bright yellow triangle appear, right in the middle of this thing.
It’s perfect, and equilateral, so can’t be an atmospheric anomaly. It only lasts a second, so you have to watch carefully for it, but it’s there.