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

(via NOAA)

Partial 22 degrees halo, 2006

(via Brocken Inaglory/Wikimedia Commons)

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

(via Mass Communication Specialist 2nd Class Kristopher Wilson)

Beyond Stockholm, January 2011

(via Peter Rosén/NASA)

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Helsinki, Finland, 2012

(via Pekka Nikrus)

Murphy Dome, Fairbanks, Alaska, October 2012

(via Jason Ahrns)

Different halos, 2012

(via Wikimedia Commons)

Light pillars over Laramie, Wyoming, January 2013

(via Christoph Geisler)

Sun haloes

(via Phil Plait)

A moon halo in Aspenes, Norway

(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

(via TSgt Matt Hecht)

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

(via slworking2)

An eye above Russia, 2014

(via InsideLight/Reddit)