Hi! 
I have recently started working in Blender 2.69 and that’s the first 3D graphic program that I use (not including NX, Solid Edge, etc., but it’s a different thing), so I want to apologize, if my questions will be not so smart. I have to create renders of couple objects moving in space. Some of that objects are huge, like for example Sun and Earth, but some of them have dimensions up to 2 meters. I guess that it wolud be better if make those big objects smaller and place them in a smaller distance to the camera, but I need to do this in real proportions. The problem is, that when I add small object Blender doesn’t display it correctly - some faces are not shown or are shown partially, textures of invisible faces in that view are shown instead of textures of visible faces. Firstly, I thought that it may be caused by wrong camera and view settings (problem exists not only in 3d viewport, but also in renders), but I couldn’t find any option that can change it. I’ve tried to find some solution in the internet, but I also couldn’t find anything useful.
Does my problem may be cased by some technical issues, like bad graphic card? Or maybe this version of Blender can’t create such thing, and I should make smaller planets? Thanks for help!
I don’t know why, but I couldn’t upload the blender file… Probably is too big, even thought I’ve tried to reduce it to leave only the most important objects 
Insted I’ve attached pictures of a basic cube, placed in the model’s center, and as you can see some faces are not shown. Also there you can see render and camera settings.
