An acorn-shaped UFO fell in the Kecksburg, PA area in 1965. This photo shows a mockup of the object, built for a 1990 episode of Unsolved Mysteries, which featured the case. More on the Kecksburg Incident here.
In the first half of Friday's show, guest host Jimmy Church (email) welcomed theoretical archaeo-astronomer Walter Cruttenden, who discussed the recent scientific discoveries of a possible new planet as well as "gravity waves." In the second half, Jimmy welcomed Open Lines callers.