This is CBS coverage. And this is a report from the Christian Science Monitor
My first non-alien explanation would be a bizarre natural phenomenon, but news agencies are saying it's a Russian rocket launch gone awry. Hmm. Maybe I don't know very much about rockets, but I have trouble imagining how a rocket, even one spiraling out of control, manages to make a seemingly stationary perfect spiral appear for several minutes. Just don't get it. I would have more believed "time-space rift anomaly."