system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Is galactus a celestial? If not what's the difference between him and celestials?
gpt
Galactus is the last survivor of the universe that existed before this one, and gained cosmic power as part of the process of doing so. The origin of the Celestials is uncertain, but they're native to our own universe. Galactus is far more powerful than any individual Celestial.