Laying down looking up spotted what I thought was a bird at first, but then realized it was moving way too fast and realized it was thousands of feet up. I then thought it could be a jet but it was circular. There was also no jet stream and it was moving faster than any jet I've ever seen. I would guess it was moving at least 10,000 miles an hour or more. The object however had what looked to be a tail of some sort. In fact it looked kind of like a balloon, because this "tail" was more underneath the object. It was so far away that it was very small. I would think weather balloon, or possibly even satellite, but it was just moving way too fast, and I don't think satellite because it was only maybe 10,000 feet above ground, and not a balloon because again, the speed. I had a very wide view it came out of the clouds but the sky was otherwise beautifully clear. It was about 3 or 4pm full daylight. The trajectory was west to east and direction, speed, and height did not change. It was silver in color. I stared until I lost it the the treeline. It's like nothing I've ever seen.