Lemme declare my variables bc these aren't teh actual terms and stuff:
Let spacetime = the known premises of the internet
Let orbiting = star systems' spin around and eventual decline into the black hole
Let leaving spacetime = the extremely complicated process of a star turning into a black hole, including collapsing into itself, growing with the mass, having infinite density, and a lot of other things
Oki here we go:
A galaxy is basically a ton of star systems orbiting around a black hole. A black hole is a star that's died. (well it's not actually died more like it isn't a star anymore) Therefore, Z basically is a black hole. A super-powerful, huge, and brilliant star that left spacetime.
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