Update: Thank you to The Simple Gatherer for letting me know it is a Luna moth. Here is more information about it. I knew someone out there would know!!
I think this is some kind of moth but I am not sure. It is on the back porch by the light (be sure to click on it to enlarge and see the detail and colors). It is about fist sized so quite large. Isn't it neat? Do any of you know what it is. Whatever it is, it is really pretty so it can hang out there as long as it likes. Have a great weekend!