No, in the ROUND EARTH theory, where the ridiculous notion of gravity transcends everything else--including reality--the lunas and the planets are formed the same way. In the Flat Earth Theory, it's obvious that not all celestial bodies are flat, but so what? That doesn't prove anything, since we also don't have a "gravity" (at least the Earth doesn't have any), thus it's not necessary--and, in fact, a little stupid--to assume it was 'gravity' which formed all the celestial bodies into spheres.
~D-Draw