Saturn will be a small part of a large mosaic (perhaps 9 feet by 3 feet) that depicts a tiny portion of the universe and will include planets, spiral galaxies, comets, and other heavenly bodies. For inspiration, I visit the Ministry of Space Exploration website and gaze in awe at the magnificent images of outer space.
(a detail pic, a large Austrian crystal with a tail of crystals, located on the far right in the larger pic)
I think this mosaic will be a triptych; I toyed with the idea of triangles but I'm not sure that shape is conducive to outer space. I like the idea of a large circle also. It will probably consist of three equal squares, hung close together side by side.