A mysterious giant spiral of light that dominated the sky over Norway on Wednesday has stunned experts — raising the possibility of an entirely new astral phenomenon.

Stunning ... mystery light glows in the sky

Thousands of awe-struck Norwegians bombarded the Meteorological Institute to ask what the incredible light — which could be seen in the pre-dawn sky for hundreds of miles — could possibly be.

Phenomenon ... unexplained sighting

Theories have ranged from a misfired Russian missile, meteor fireball, never-before-seen type of northern light, black hole and even alien activity.

Blue tail ... stunned Norwegians

Witnesses across Norway all described seeing a spinning “Catherine wheel-style” spiral of white light, centered around a bright moon-like star. A blue “streaming tail” appeared to anchor the spiral to earth, before the light “exploded” into a rotating ring of white fire.

Mystery ... missile theory

Sightings of the spiral spectacle, which lasted for two minutes, were reported as far north as Finnmark to Trondelag in the south.Chief Scientist Erik Tandberg, at the Norwegian Space Centre, said that he too was “totally amazed” by the spiral.He agreed with many other experts that the spiral pattern could have been caused by a missile from Russia — something the Russian military have strongly denied.

Astonishing ... spinning UFO