da Vinci, Leonardo
Born Florence, (Italy), 15 April 1452
Artist Leonardo da Vinci, of Florence and Milan, produced three naked-eye renderings of the Moon. He thought of the Earth’s satellite as a nonuniform mirror (likely watery with some land) reflecting the light of the Sun. Knowing that a smooth sea would result in a specular reflection, da Vinci imagined white-capped waves breaking on lunar shores. He also correctly identified “earthshine” as being produced by sunlight reflected from the Earth to the Moon.