No, Africa really IS that size. And you can blame the map, the res is low and the cloud texture on the outer sphere laps over the lush jungle bits. The clouds are barely visible because the maps suck and they seem to blend in with the inner sphere's textures.
The thruster glows just are like that. It's the future

The pictures are just the models I've extracted put into some scenarios. Don't blame me for the lack of ships, my computer is so sucky it was half-impossible moving the ships in the upper pic's scene. I blame TS for that.
I figured I had posted those two B5 renders before. I still think they're both better than the TS renders, mostly because I'm much more familiar with Blender.