2 star lights rotate around each other, one remained constant, other moved...I was walking looking at the aircraft lights in the sky. I have seen two stars rotating around each other. I have seen 2-3 exact circular rotations, it was slow rotations. One remained unmoving. It was impossible to distinguish them from stars. Their light was exactly a star light. Another one was moving , it was either moving or lowering, it can't be said. I have observed the moving light for 30 seconds until the view is cut by the trees. The motion was slow, i have though it's a meteorit, but it was too slow and the light remained, not dimmed. This event is observed in the center of istanbul having heavy air-traffic. at the same time 2-3 aircarfts were flying around. but the lights i have seen are not like any of them. and no plane can make such perfect rotations..