7 Sky Phenomena You Won’t Believe Exists In Nature

Fire Rainbow

Fire rainbow is a misleading term for this wonderful sky formation. The real name of “fire rainbow” is circumhorizontal arc. They are a type of ice halos and are an optical phenomenon in the sky.  They do not have any relation to rainbow or fire. Circumhorizontal arc form when refraction of sun or moonlight pass through plate-shaped ice crystals suspended in the sky. When they form in full, their appearance is bright and has rich gradients of colors running parallel to the horizon.

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