..... And here is another somewhat unusual occurrence. Both the blue sun and orange sun are Terragen sunlight nodes.
The asteroid is really huge in Terragen scale (and so is that spinner) and located super far out from the origin (60 million meters Z axis for example).
When I made the visible disk size for the orange sun 20 degrees, it becomes so large that it appears to extend into the space taken by the asteroid.
I never thought about Terragen sunlight sources as being actual 3D spheres, but it seems they do occupy 3D space... check the image out and see if you agree.