Oars for the air of the sky

I originally did the planet, rings, and moon for Simple Photorealism using Persistence of Vision. When I wrote Silver sail and gold, above a dappled sea I added some Greek rowing ships.

Produce ships and sail which can be used in the air of the sky. Then you’ll find men to man them, men not afraid of the vast emptiness of space. — Johannes Kepler

…the imagination of nature is far, far greater than the imagination of man. — Richard Feynman (What Do You Care What Other People Think?)