SpaceX Was Probably Behind the Mysterious Spiral in the Alaska Sky
The blue swirl was likely a fuel dump from a SpaceX rocket launch and not aliens.

Ronnie Cole initially thought that the bright light over southern Alaska was a plane.
Mr. Cole was a tour guide for Alaska Photo Treks when, in the early morning hours of Saturday, he was setting up two portraits with his clients. He noticed that "there was something strange about the light."
He said, "It began to form a spiral pattern. It was very small at first." "It moved out of clouds, but the spiral remained, and was getting larger in the sky. Then I realised that it was another object.