Guys turning off shadows in a space scene will ruin your realism. Any ship that has anything at all sticking out of it should cast a really sharp shadow ON ITSELF. Turning off shadows for the light or the ship is a bad idea.

The real problem is you've modeled your background as a prop that is lit by your light source. Stars and galaxies and such are billions of miles away and are self-lit. All you gotta do is handle the background image correctly.

You don't want this item to experience any diffuse lighting so go into the material and set Diffuse_Value = 0. You also do not want it to experience any specular lighting (it's not really a surface) so set Specular_Value = 0.

Now just plug the background image (Image_Map node) into Alternate_Diffuse. Now the object is self-lit - it will not react to any scene lighting, and it will not experience shadows.

---

Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)