Apparently this earth will be a polished ball when new Jerusalem lands on it at the end of Re:22. The rest of the planet is a courtyard and the 'stars' are where the nations will be. When the courtyard has people standing like they are blades of grass the new earthy era will come to an end and all those people go to Mount Sion like the Angels that inhabited the universe did during the Great White Throne event.

1Pe:1:24:
For all flesh is as grass,
and all the glory of man as the flower of grass.
The grass withereth,
and the flower thereof falleth away: