First observed at my zenith over head, ,It first looked like a Airliner at altitude. It was a constant light, no anti-collision lites or wing tip Light or flashing strobe. It was traveling southeast to northwest at about 50 Degrees above the horizon the object grew intensly bright, brighter than Any star I have ever seen. It then "poof" was Gone like it went though a door and then it closed. The weather was clear wth a few small clouds, sun was mostly set. The last light almost gone. I Did not act like a manmade object reflecting off the sun..