So what caused the mysterious spiral? No one is sure, but the prevailing theory is fairly mundane. Several astronomers are speculating that an errant, spiraling rocket is responsible. Since no rockets were fired from the local Andøya Rocket Range this morning, the hypothetical rocket may have come from Russia.


Or, as one poster on Reddit suggests, it could just be the Sliders breaking into our universe:

[VG Nett (Translated) via Reddit]