The sun is infinitly far away. You can't reach it.
If You're using the box as a skycube, I believe the sun will pass through. Otherwise, you can make a light with a VERY laryge range, add a couple weaker ones in every direction (6) around it and it will create a sun- effect.
Jimmy died, today, he blew his brains out into the bay, in the state of mind, its my own private suicide.
A stitch in time saves nine... what the hell does that mean?!?
| 
