We tend to associate rainbows with myth because they call to us with the promises of riches. But rainbows are not the only masterpieces that nature paints across the sky. There are also moonbows, triple sunrises and even fog bows that arch over the horizon. Here are 10 impressive images of rainbows and their cousins. Pictured here is a double rainbow over Morro Bay, Calif., taken June 24, 2010. (Text: Katherine Butler)