The Shi'ar quickly joined with other races and several of Earth's superheroes to battle Galactus. During the conflict, the Silver Surfer managed to turn Galactus' own energy-siphoning machines on Galactus himself, fatally weakening him. Galactus died, warning that the madness which had consumed him was a precursor to another greater horror. As he passed away, Galactus was converted to energy by his own planet-destroying machines. As Reed Richards noted, the energy would radiate forever outward, so he could never again reform.

It takes Shiar races, other races and some of the super heroes from Earth to defeat him as well as Silver Surfer and Galacutus himself. So hope for a lot of "snake eyes"