When Bart is forced to assist Principal Skinner in early-morning astronomy observations, he discovers a giant comet heading towards Springfield. Facing impending doom, the entire town shows up at the Flanders family bomb shelter.
Released: Jan 01, 1970
Runtime: 00:22:14 minutes
Genre: Animation, Comedy
Stars: Hank Azaria, Yeardley Smith, Julie Kavner, Nancy Cartwright, Dan Castellaneta, Harry Shearer