The Beauty of Rainbows Have you ever wondered if there is a pot of gold at the end of a rainbow? Maybe you have or maybe you've even tried to find it. In this article you will find out how rainbows are formed, the colors in a rainbow, and other interesting facts about rainbows. First of all a rainbow is a curve of colored light which is seen in the sky. Rainbows can be seen in moonlight or in artificial light. They are caused by the sun shining through tiny drops of water in the air. A rainbow's brightness depends on how large the drops are. The larger the drops are the brighter the rainbow will