User blog comment:BlackWizardZeref/Chapter 369: The Place Prayers Reach/@comment-3075024-20140131175528/@comment-4829046-20140202162853

Well... technically he can, but not the same way. A comet for instance is made out of ice, so if Gray can pull down a comet, it would be OP but still within his magic and though not the same as meteor, could still count as "hurling a Celestial Body".