Okay just finished the reject adam ending and what I can say based on Lily's reaction
the space colony wasn't supposed to envoy envelop earth. Lily had been stranded on Earth for 2 years so she probably remembers it very different since the last time. Eve has no reaction to it meaning she already saw it like that. This could imply that over the years, Mother Sphere somehow turned the entire colony into some sort of dysphon sphere orbiting earth like a cage, probably to keep naytiba and its other inhabitants from escaping the planet.