Question: What is a moonbow?
Answer: It’s a night rainbow around the moon. They’re much rarer than the common rainbows we see in sunlight because the conditions have to be just right: the moon must be near its brightest phase, water droplets have to be present in the part of the sky opposite the moon, and the moon needs to be low on the horizon so the night sky is still very dark. And then. . . there’s a chance. Moonbows are much less intense than solar rainbows, and often look spooky-white, but all the colors are there.