Story time. Disclaimer first: I do not believe in aliens.
Growing up we had a VW bug that as a child, I would frequently lay down in the back seat of and fall asleep coming home from trips. No seatbelts, Dad driving, and I would lay in the back seat of the bug and just watch the stars go by coming over the mountain from visiting grandma.
One night when we were coming home over the mountain I was in the backseat as usual stargazing when we approached the peak of the mountain. This is where you stopped going uphill and started going downhill. So there I am, gazing away at stars, when something very large and moving impossibly slow kind of "peeked" over the mountain top. It was too big to be in the sky going that slow, but there it was. It didn't make a sound that I heard and I never said a word. Dad didn't seem to notice it at all. No one did but me. The viewing lasted maybe 3 seconds. Oh there were multi-colored lights in a circle around the bottom of whatever it was. If I had to describe the shape, I would say something like an old wooden top kids used to spin.
Again, I don't know what it was. This was in the 1970s in East TN. I was a kid and I may have been asleep for all I know. Maybe it was when Close Encounters came out and I was dreaming, who knows. It definitely stayed with me through the years.