Based on research by Philip Stooke"It just didn't seem likely that da Vinci was the first person who ever tried making a picture of the moon," says Stooke, a planetary scientist at the University of Western Ontario. While plowing through libraries of cave paintings and ancient art, he came across peculiar carvings in the walls of the Knowth tomb, a stone monument left by the mysterious culture that built Stonehenge. He immediately noticed that the arcs and circular shapes closely corresponded to the dark markings on the moon.
"These people were fascinated by astronomical things," says Stooke. "In fact, the whole shape of Stonehenge--a circle with a horseshoe inside--might represent the moon."


