Stationary lights that disappearedI was standing on the roof of my house at the time being indicated. Suddenly we saw lights at a low height. First we thought of it as an aircraft.but we observed that they were stationary. It was not an helicopter because it was producing no noise at all even at a low height and its presence there made no sense. After observing it for at least 40 seconds our attention was diverged from it and after about no more than 15 seconds I saw that that thing was not there.