Astronomers have discovered a new kind of the Northern lights called dunes. The new auroras consist of glowing waves and were discovered in collaboration with space researchers. They were traced down to the Earth's upper atmosphere and are caused when charged particles from the sun arrive at the Earth and cause excitement in the oxygen and nitrogen atoms. This energy is then released in the form of lights. The research, conducted by scientists from the University of Helsinki, was published in the journal AGU Advances.