I was at church, outdoor mass. I was watching vultures flying. A silver disc descended as from space at very high altitude above vultures. It then moved in a southerly direction for five seconds at a slow rate of speed and made a slight turn to the west. It then hovered for ten seconds after which it shot straight up and out of sight. It flew as if it was almost floating like a butterfly on the wind; very hard to describe. When I first saw it I new it was nothing that we have put in the air. I am a sky watcher and I have seen these silver discs four times in the last eight months. In day light they seem to reflect sun light. At night they are a bright white light. Every time I see them they excite me and give me a strange feeling I have never had with any other event. I think it is because I am seeing something I know has not been made by man. It makes you think how little we know of the universe we live in.