Fantastic Four Vol. 1 (1961-1996) #243

Plot

Terrax has pulled the island of Manhattan into space and threatens to crash it into Galactus' spaceship unless the FF agrees to destroy the world eater; Galactus and Terrax battle and the big G takes his herald powers away; Fatigued from the battle, Galactus prepares to eat earth but the FF and their allies battle him and take him down.