I was standing on my back porch facing due east when an object boomerang shaped with multiple wings flew by at an enormous rate of speed heading north. The object was a light blue almost luminescent in color. The object appeared to be no larger than a mid sized aircraft. I have never seen anything like it. Object was boomerang shaped, with multiple wings. Flew low and fast. Made zero noise. I am not crazy. This really happened. Scared me to death.