In my tests, the actual rendering of the sky atmosphere is not tied to the scene component, and thus it does not respect origin rebasing (i.e. it will always render at world zero). Not sure if this was an oversight, or is there is some rendering reason for doing this. I definitely see the value in a movable/rebasable sky atmosphere. Not sure how much modification to the engine this would take, but I’m definitely inclined to give it a look.