I went out on the balkony to get a smoke. It was a clear night, with no coulds. I looking up at the stars as I was smoking and the I saw it, whatever that was. It was boomerang shaped and it looked like as if it would have big wings (like a dragon), but they were not moving. It was completly silent. I saw it for around 5 - 7 seconds. The strangest thing about it was the reflection. I looked like as if it would reflect the night sky, the stars. Like a "piece" of the night sky would start to move. I dont know what I saw. I tried to find something on the web, but i could not find anything like it.