The Musk Who Fell to Earth When inventor Elon Musk lands in Springfield, he and Homer become fast friends and revolutionize the town's nuclear plant. But when Musk goes overboard and Mr. Burns wants him removed, Homer must figure out a way to break up with him. Details Casts Title The Musk Who Fell to Earth Genres Family Animation Comedy Release Date 2015-01-25 Episode Runtime 00 Hours 22 Minutes Season Number 26 Episode Number 12 Production Companies Gracie Films, 20th Century Fox Television, 20th Television Animation, 20th Television Dan Castellaneta Homer Simpson / Abe Simp? Julie Kavner Marge Simpson / Patty Bo? Nancy Cartwright Bart Simpson / Nelson Mu? Yeardley Smith Lisa Simpson (voice) Hank Azaria Moe Szyslak / Chief Wigg? Harry Shearer Ned Flanders / Mr. Burns?