APOD
Astronomy Picture of the Day
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
Creature Aurora Over Norway
Explanation: 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 .
| Date | November 18, 2018 |
|---|---|
| Credit | Image Credit & Copyright: Ole C. Salomonsen ( Arctic Light Photo ) |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |