November 18, 2018
Somewhere above you, light is arriving from places so distant their names feel like poetry.
Creature Aurora Over Norway
Birthday · November 18, 2018
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APOD published November 18, 2018. Credit: Ole C. Salomonsen (Arctic Light Photo). A publication-date match, not a photo taken on your date. Independent of NASA.
It was Halloween and the sky looked like a creature. Exactly which creature, the astrophotographer was unsure but (possibly you can suggest one). Exactly what caused this eerie apparition in 2013 was sure: one of the best auroral displays in recent years. This spectacular aurora had an unusually high degree of detail. Pictured here, the vivid green and purple auroral colors are caused by high atmospheric oxygen and nitrogen reacting to a burst of incoming electrons. Birch trees in Troms�, Norway formed an also eerie foreground. Recently, new photogenic auroras have accompanied new geomagnetic storms.
Image credit: Ole C. Salomonsen (Arctic Light Photo)