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Affichage des articles dont le libellé est Astronomy picture of the day - 2018 June 21 - Northern Lights and Noctilucent Clouds. Afficher tous les articles
Affichage des articles dont le libellé est Astronomy picture of the day - 2018 June 21 - Northern Lights and Noctilucent Clouds. Afficher tous les articles

21/06/2018

Northern Lights and Noctilucent Clouds - Astronomy picture of the day - 2018 June 21

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Northern Lights and Noctilucent Clouds 
Image Credit & CopyrightAdrien Mauduit
Explanation: Luminous skies after the near-solstice sunset on June 17 are reflected in this calm lake. The tranquil twilight scene was captured near Bashaw, Alberta, Canada, northern planet Earth. Usually spotted at high latitudes in summer months, night shining or noctilucent clouds hang just above the horizon, transfusing light into a darker sky. Formed near the edge of space, the icy apparitions are condensations on meteoric dust or volcanic ash still in sunlight at extreme altitudes. Also near the edge of space on this short northern night, solar activity triggered the lovely apparition of aurora borealis or northern lights.

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