Locations > Wyoming > Rock Springs Rock Springs, Wyoming UFO Sightings Rock Springs, Wyoming, Cigar Shaped Object UFO Sighting - It was summer of 1988 and I had just moved to Rock Springs. I was out in the back yard one evening when I saw a cigar shaped vessel fly across the sky... 05/16-2016 16 miles away: Green River, Wyoming, Disc UFO Sighting - Last night I saw this light far away in the sky. It kept getting bigger and bigger and it was pretty clear that whatever it was was coming towards me ... 07/03-2016       Submit a UFO sighting for Rock Springs, Wyoming: When did this happen (optional):