On Saturday evening, "above Sarajevo," I saw something (comet, asteroid) very bright with great tail behind. Lasted a while. On Sunday I saw the first one "thick" white streak in the sky, but I did not because of his sight failed to see what's up. And at the moment when I thought, "maybe the plane" plane is encountered. Of course, his track is much "thinner" and quickly disappears. When I stood at the window again, shortly thereafter, I saw other "thick" trail. I'm looking for anything anywhere on portals ... no.