Nabta Playa: The Desert Star-Circle Older Than Stonehenge
In the far south of Egypt, in one of the driest and most desolate stretches of the Sahara, there lies a place where a great mystery is written in stone across the empty sand. It is called Nabta Playa, and it is one of the oldest known monuments to the human study of the heavens anywhere on earth. Here, some seven thousand years ago and more — a thousand years and more before the first stones of Stonehenge were raised, long before the pharaohs built their pyramids — a people living in what was then a green and watered land set up rings and rows of standing stones aligned to the sun and, it seems, to the stars. They were not the builders of a great civilization with cities and writing. They were nomadic herders of cattle, wanderers of the savanna. And yet they raised a monument of astronomical knowledge so early and so sophisticated that its very existence forces us to reconsider how ancient the human quest to read the sky truly is. How and why these desert herders came to build a star-...