From build to build, stuff that's under construction tends to come and go -- that's why we try to be up-front about all of this footage being in progress. That said, it's probably worth clarifying that for every celestial body in the game, there is a local space terrain and a scaled space mesh -- the former is the procedurally-generated, highly-detailed thing that you actually land on, while the latter is the simplified representation that is seen both from a distance and in the map view. There