Here’s a useless SketchUp fact:
SketchUp stores coordinates as double, and in inches.
Therefor, the maximum physical size of a SketchUp model is 1.7e308 inches, or about 4.3e306 meters.
Considering the observable universe is about 4.4e26 meters, a SketchUp model can be about 1e12 (or 1,000,000,000,000) times bigger than the observable universe.
(Unless my math is wrong)
Note that at this scale, the minimum precision of the model can only be one inch.