"Why are there so many songs about rainbows?" sings Kermit the Frog in a song (about rainbows) called "Rainbow Connection" from 1979's "The Muppet Movie." And it's not just songs that feature rainbows ...

You may not know that a rainbow is presented in a full circle. The "bow" is the portion that people usually see. The viewer must first be between the sun and the falling rain to catch a rainbow.