UFO sightings in Pennsylvania
Pennsylvania's signature case is the 1965 Kecksburg incident, in which a fireball seen across six states ended, some residents said, with an acorn-shaped object in the woods and a military recovery. The Air Force called it a meteor and said nothing was found.
Pennsylvania case files in the archive
Saw something over Pennsylvania?
Most strange lights have an ordinary cause. Run the identifier: seven questions and the three most likely explanations, from a Starlink train to Venus to a drone, each with how to confirm it.
Note the exact time, the compass direction, the height above the horizon, how long it lasted and how it moved. Check a flight tracker and a satellite app before deciding it is unexplained.
File it. The National UFO Reporting Center and MUFON take reports from every US state, Pennsylvania included, and their databases are where the per-state counts actually live.
Other states with famous cases
The famous cases above follow the public record; XenoAtlas documents claims and their explanations and takes no position on whether any involved non-human contact. Per-state sighting counts are maintained by NUFORC and MUFON. For the big cases on a map, see the case files.