First mod I installed after finishing Space age and jumping into modded!
Favorite version of the images for me is HD Planets Renders by SovietSpartan
After playing with settings, I think the default rotation should be 0.003, visible but subtle, right now on 0.01 it's a bit distracting and looks odd.
I also set initial scale to 1, final scale to 10, arrival distance 100 and anim duration 1000.
Congrats on delivering one of the best additions to space age so far.