Strange objects in the Norwegian sky

The aura image of a photographer in Norway became the subject of scientific discussion by the appearance of a strange green object.

The jellyfish-shaped object appears in the photo taken on January 20.Photo: Per-Arne Milkalsen.

Mail Online said, amateur photographer Per-Arne Milkalsen lives in the city of Andenesm, Norway. The city is quite close to the Arctic so the aurora often appears here. On January 20, after shooting the aurora in the sky Milkalsen happened to see an object shaped like a jellyfish in a photo. At first, he thought that the object in the image was made up of a blur on the lens. But after Milkalsen posted the photo on spaceweather.com, he received many emails from experts from all over the world.

Truls Lynn Hansen - a scientist from Tromso Physical Observatory, Norway - thinks that the jellyfish body in the photograph is not the result of a blurring on the camera lens.

"The object is bright green like the Arctic aurora. That means aurora is the light source that causes that phenomenon," Hansen told Mail Online.

However, Hansen admits that aurora can hardly cause any light effects. According to him, it is very likely that aurora light reflects on another object - like an artificial satellite or an airplane - making it green.

The whole picture has a strange object.Photo: Per-Arne Milkalsen.

Pal Brekke, senior advisor to the Norwegian Space Center, thinks that the reflection of street light could be the cause.

"But why is the object green? It should have been white or yellow if it was the result of reflecting the light of the street. Therefore, even though I don't believe it to be an artificial satellite, I still that possibility cannot be ruled out, " Brekke said.

Aurora is an optical phenomenon created by the interaction between charged particles from the solar wind and the upper atmosphere of the earth. This interaction creates colorful bands of light in the sky at night. The brightness of the aurora reaches the maximum level after the sun's eruption. The aurora of light rays constantly moving and changing colors make viewers feel they are colored silk strips in the air.