As an experiment I was trying to create a scene with a few simple objects but with extremely large dimensions. Think planet and moon sized objects and a couple of human scale objects in the foreground.
- I have units set to metric.
- I have set my camera's clipping end value 10000km
- I moved the camera to 0, -9000km, 0 looking toward the origin (I can see the 3D cursor there)
- I create a UV sphere at the origin with size 4000km.
The sphere is not visible.
I've tried a number of variants to no avail.
What am I missing? Or is this just out of scope for Blender for some reason.