Holy Beast Shatterstar!

A city was floating in the dark expanse of stars. Roughly ten thousand kilometers in both length and width, the area it covered was larger than that of a planet.

It was like a huge plate in space, and in this floating city were soil, mountains, and rivers. There were also flora and fauna. A gigantic semi-circle energy shield was enclosing everything, protecting all from cosmic ray interference.

A planet ought to have everything, and the difference was that this was no planet but a flat plane, instead. A planet could only revolve around a set orbit, but this city could slowly navigate its way across space with its powerful propulsion engine.