Halos and light pillars are optical phenomena created by light passing though ice crystals to create brilliant arcs and columns in the sky. While it's a very natural phenomenon, the effect can appear eerily supernatural.

Looking North from the South Pole, December 1980

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(via NOAA)

Partial 22 degrees halo, 2006

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(via Brocken Inaglory/Wikimedia Commons)

An FA-18C Hornet above the Nimitz-class aircraft carrier USS Harry S. Truman, Norfolk, Virginia, June 2007

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(via Mass Communication Specialist 2nd Class Kristopher Wilson)

Beyond Stockholm, January 2011

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(via Peter Rosén/NASA)

Helsinki, Finland, 2012

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(via Pekka Nikrus)

Murphy Dome, Fairbanks, Alaska, October 2012

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(via Jason Ahrns)

Different halos, 2012

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(via Wikimedia Commons)

Light pillars over Laramie, Wyoming, January 2013

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(via Christoph Geisler)

Sun haloes

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(via Phil Plait)

A moon halo in Aspenes, Norway

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(via imgur, photo by Steve Nilsen)

A U.S. Coast Guard HH-65C Dolphin rescue helicopter, in front of a circumhorizontal arc (also known as fire rainbow), an ice-halo formed by plate-shaped ice crystals in high level cirrus clouds, at Atlantic City International Airport, New Jersey, November 2013

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(via TSgt Matt Hecht)

Palm trees and a 22° halo above a city, December 2013

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(via slworking2)

An eye above Russia, 2014

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(via InsideLight/Reddit)