Really love this work, Doc! It's always so great.
I only have one C&C, and it's really just about Terragen. Boy-oh-boy do we need better lens burst effects. Different sided stars (for example for realistic space scenes 4 sided star burst effect would be more accurate aligned top-to-bottom, left-to-right), as well as effects like just linear flares seen in a lot of scenes like this (like Star Trek 2009)