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Jupiter Meets Moon Halo. Moon-Jupiter conjunction on January 14, 2014 plus a beautiful lunar halo, as seen from Ankara, Turkey. (Credit and copyright: M. Rasid Tugral)

A QUADRUPLE LUNAR HALO OVER SPAIN Sometimes falling ice crystals make the atmosphere into a giant lens causing arcs and halos to appear around the Sun or Moon. Madrid, Spain, where a winter sky displayed not only a bright Moon but as many as four rare lunar halos. The brightest object, near the top of the above image, is the Moon. Light from the Moon refracts through tumbling hexagonal ice crystals into a 22 degree halo seen surrounding the Moon. Image Credit & Copyright: Dani…

Enceladus. False color mosaic of one of Saturn's moons (2005-07-14). It's made up of images taken at various wavelengths from ultraviolet to infrared. (Credit: NASA/JPL/Space Science Institute) Mona Evans, "Galactic Winter Games" http://www.bellaonline.com/articles/art182620.asp

Expedition 38 Soyuz Commander Mikhail Tyurin, holding the Olympic torch, and Flight Engineers Koichi Wakata and Rick Mastracchio wave farewell prior to boarding the Soyuz TMA-11M rocket for launch. Needless to say, the torch was not lit on the station or in space. (Credit: NASA/Bill Ingalls) Mona Evans, "Galactic Winter Games" http://www.bellaonline.com/articles/art182620.asp

Sun halo seen from Chilidog Observatory, Monterey, Mexico. (2014-03-02) (Credit: César Cantú) Moisture or ice crystals in the atmosphere can create a rainbow effect around the Sun. There may just be an arc either side of the Sun instead of a halo - when this happens, they're called sun dogs.

Solar halo. Seen 2013-11-06 over Klerksdorp, South Africa. (Credit: Daniël Engelbrecht) These occur if atmospheric conditions are just right for sunlight to reflect off moisture or ice crystals. If only arcs appear, instead of a full circle, they're called sundogs.

National Geographicfrom National Geographic

Jupiter Moon Io, Jupiter Moon Picture, Io Picture

Jupiter and the Gallilean moons