A moonbow (also known as a lunar rainbowor white rainbow) is a rainbow produced by moonlight rather than direct sunlight.

A moonbow (also known as a lunar rainbowor white rainbow) is a rainbow produced by moonlight rather than direct sunlight.
Other than the difference in the light source, its formation is the same as for a solar rainbow: It is caused by the refraction of light in many water droplets, such as a rain shower or a waterfall, and is always positioned in the opposite part of the sky from the moon relative to the observer.
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