Well, yeah, with a circular object, an explosion would extend in all directions.
Stupid Lucas and his stupid 'Ring of Distruction.' >:/
Anyway, I didn't really think about it until I played Knights of the Old Republic, where you actually land on moons of planets, most of which are habitable.
I was thinking that it was a little out of the way planet (Endor), and the 'forest moon' was used to differenciate from say, the desert moon, or the uninhabital moon. I mean, how many moons does Endor even have?
-kv