We All Know Rainbows But Have You Ever Seen a Moonbow – A Night Rainbow Lit By the Moon?

Mentioned at least since Aristotle's Meteorology (circa 350 BC), moonbows are much fainter than daytime rainbows, since the surface of the Moon reflects a smaller amount of light. For this reason, it is much more difficult for the human eye to discern colors in a moonbow, as the light tends to be too dim to activate the color receptors in our eyes. As a result, we usually see moonbows to be white, but their colors do appear in long exposure photographs. A 10pm blood red night rainbow over Scotland! Image credit: Stefan Lee Goodwin