“A prehistoric map of the night sky has been discovered on the walls of the famous painted caves at Lascaux in central France. The map, which is thought to date back 16,500 years, shows three bright stars known today as the Summer Triangle. A map of the Pleiades star cluster has also been found among the Lascaux frescoes. And another pattern of stars, drawn 14,000 years ago, has been identified in a cave in Spain.”