You know what, I just remembered I did hide the inner sphere at certain points, but I don't remember when... my bad. The dull cap on the top was really starting to bug me. Here's a small scene to see the translucency (god I'm getting tired of typing that word) from different angles. Back wall set to glow and lit with anything glows, the only light source in the image. And I don't know why I have those annoying artifacts on the side walls, the ceiling had it too until I added objects there, as well.