The Simpsons Season 6, Episode 14 Bart's Comet Family Animation Comedy IMDB 8 Country United States Duration 22 min Air Date 1995-02-05 Actors Dan Castellaneta (Homer Simpson / Abe Simpson / Barney Gumble / Krusty (voice)) Julie Kavner (Marge Simpson / Patty Bouvier / Selma Bouvier (voice)) Nancy Cartwright (Bart Simpson / Nelson Muntz / Ralph Wiggum (voice)) Yeardley Smith (Lisa Simpson (voice)) Hank Azaria (Moe Szyslak / Chief Wiggum / Apu / Comic Book Guy / Carl (voice)) Harry Shearer (Ned Flanders / Mr. Burns / Smithers / Skinner / Lenny (voice)) Overview 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.