At 7:40 pm I was walking my dog in the courtyard of my apartment complex. I looked up at the sky and was thinking that the stars looked especially bright tonight...I saw what appeared to be a low moving very small cloud with no distinct shape. I looked back down at my dog and then up again and I realized that it was no cloud (the sky is completely clear tonight). By the time I looked back up the object was almost directly overhead and I saw that it had morphed into a distinct large boomerang shape. It seemed as if it were trying to camouflage itself as a cloud but it had lights outlining it. The object was low flying and was large...it made absolutely no noise and was fairly slow moving. I was shocked at first, and I began to feel very uneasy and frightened. The object flew overhead and I watched it for a few more seconds before I became even more uneasy and hurriedly rushed my dog back into my apartment. My dog did not seem to notice the object, she was not acting strange. I felt much more relaxed when I got back inside of my apartment....it was an eerie experience, I have never seen anything like it before in my life.