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    new auroral form tagged posts

    Citizen Science discovers a new form of the Northern Lights

    February 1, 2020, Categories  Astronomy/Space

    Dune-shaped auroral emissions
    Very rarely, a gravity wave rising up in the atmosphere can be filtered and bent to travel between the mesopause and an inversion layer intermittently formed below the mesopause. The mesopause and the inversion layer are colder than the other layers of the atmosphere. In the wave channel established between these two layers, gravity waves coming from below can travel long distances without subsiding. Dune-shaped auroral emissions are created when solar wind charges the oxygen atoms surging through the channel. (Graphic credit: Jani Närhi)

    Working together with space researchers, Finnish amateur photographers have discovered a new auroral form...

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