Very, very nice!
The only thing I would comment on is that old Albert was most famous for working on the very largest scale structure of the universe, ie, general relativity. That scale is so large that it encompasses groups of large numbers of galaxies, each one with mind-boggling number of stars, each star almost certainly having many planets, moons, etc. OTOH, your illustration uses what appears to be just one single tiny moon. The corrections of special relativity to the motion of such a small object are small, so I wouldn't use that image.
If there is any way you could use an astronomical image of a much larger region of space, I think it would be much more appropriate.
T