A moonbow is a rainbow that occurs at night. Moonbows are relatively faint, due to the smaller amount of light from the Moon. As with rainbows, they are in the opposite part of the sky from the moon. It is difficult to discern the rainbow colors due to the faint nature of a moonbow, so it often appears as a pale, white arc.

External links

• Moonbow picture
• Moonbow picture made with long exposure