Space Godzilla wouldn’t survive one blast of Godzilla’s Infinite Heat Ray (The atomic breath he used to all but kill Destoroyah) so there’s your answer.

In space, the Godzilla cells and HE crystal shards are affected by energies in space (possibly energies related to Ghidorah, idk) and fuse together, slowly growing into SpaceGodzilla.

His general origin (bit of Godzilla went into space, mutated, and came back) is fine. I don't really need specifics. And with that, I'm fine with the name. Yes, its campy but so are a lot of Godzilla characters. …

If Space Godzilla is to appear in the next film but with changed Origins and Name, What should his new name be?

Did you not watch Godzilla vs space Godzilla? Space G absolutely has a thematic purpose, even if it was not very deeply explored. Ill be the first to admit it is a bit hammy but here is the line. "A monster. …

Space Godzilla is a horrible amalgamation of a space faring crystalline microorganism colony hybridized with the DNA of a dinosaur mutated by atomic radiation Nothing about him is natural in any sense of …

And naturally, Godzilla chooses his son's safety over his own, resulting in him being defeated and having to helplessly as SpaceGodzilla captures and imprisons Jr. The movie started leaning towards …

Such as Space Godzilla by the Xiliens seeing as how Godzilla is the only thing standing in their way and defeated them twice. Seeing as how Ghidorah wasn't able to defeat Godzilla twice, they decide that …

Specifically, it's the Godzilla cells put into space by the death of Biollante - a mutant Godzilla/rose hybrid - interacting with crystals that created Spacegodzilla.

Space Godzilla saw the source of the Blackhole being crystals within the Kaiju’s body, so he overloaded them and completely shattered them, causing the Kaiju to die to its own weapon.