The aussie spiral was completely resolved.
It was a spent fuel tank re-entering the atmosphere.
The Norway spiral was a Russian Bulava missile gone awry.
Agreed, and the fuel tank was venting from at least two places while it was spinning. But - some force held the spiral of escaping gasses in a rigidly uniform and tightly compact spacing, with no uneven expansion or crossover of the spiral lines, until the fuel escaping from the tank ran out. Then whatever that controlling force was, turned off, and the spiral immediately dissipated into a generalized mist around the black "hole" left in the center where there was no escaping gas. So the question is - what was that force that held the gas spiral structure so rigid?