I was wondering lately... When watching shots of the the moon or hanging around it in Orbiter, there seem to be two colours predominant on the surface: One dark, a bit greenish gray, and one light gray. The dark colour seems to be dominant on lower places, while lighter seems to be dominant in most other regions.
Why is that? I thought the whole surface is covered by dust anyways.
Why is that? I thought the whole surface is covered by dust anyways.