cryptoengineer wrote:When I saw "Star Wars: The Force Begins", I was struck by exactly this question. The film includesSpoiler:an entire planet which has been converted into a hyper Death Star, including a trench which must be hundreds of miles deep and hundreds of miles across. Quite aside from the 'engineering problems', the planets entire atmosphere should have collected in the bottom of the trench, leaving the surface in vacuum. Yet it is shown with atmosphere, and lush vegetation
Perhaps digging that trench was the first step in terraforming the planet (that particular planet having far too much atmosphere for humanoid survival, of course).