Unknowable Episode 61: The Kecksburg UFO Incident

In December 1965, a fireball streaked across at least 8 US states and parts of Canada. It was witnessed by many, including folks in Kecksburg, Pennsylvania -- a small village southeast of Pittsburgh -- who swear the object crash landed in a patch of woods. Nothing was *officially* found, but theories abound. Was it a spy satellite? An extraterrestrial craft? Or something even MORE surprising...