Science around 18,000 BC

The Globe




Southwest Asia



What Brophy discovered was that the calendar circle at Nabta Playa was more than a calendar. It was also a star-viewing diagram. Three of the six stones in the center of the circle diagramed the stars of Orion's belt as it appeared on the meridian at the summer solstice between 6400 and 4900 BC. In other words, if a person stood at the north end of the meridian sight line and looked down on the stone diagram, he or she would see a representation of Orion's belt as it appeared in the sky just before sunrise. The other three stones chart Orion's head and shoulders as they appeared on the summer solstice meridian, at sunset, during the years around 16,500 BC--symmetrically opposite Orion's belt stars in 5000 BC. According to Brophy, both dates are the maximum and minimum of Orion's tilt angle in the sky. In other words, the stone diagram depicts the time, location, and tilting behavior of the constellation of Orion through its celestial cycle. More important, it illustrates how to visually understand the pattern of stones. If an astute, ancient sky-watcher from some foreign culture stumbled upon the Nabta calendar circle, even if he had no concept of the constellation of Orion, he would very likely have figured out the meaning of the diagram, as long as he was there during the diagram's window of functionality from 6400 BC to 4900 BC. Astonishing as it may be, the bedrock sculpture underneath "Complex Structure A" at Nabta Playa appears to be an accurate depiction of our Milky Way Galaxy, as it was oriented astronomically at a specific time: vernal equinox heliacal rising of the Galactic Center in 17,700 BC. According to Brophy, in a method developed by Schaefer in 1986, the probability that seven stars align with megaliths is less than 2 in 1,000,000. Strikingly, that is more than a thousand times as certain as the usual three standard deviations requirement for accepting a scientific hypothesis as valid. Even by conservative estimates, these are by far the most certain ancient megalithic astronomical alignments known in the world. (Before the Pharaohs)

…analyzing prehistoric stone sculptures in the Egyptian desert, astrophysicist and archaeoastronomer Thomas Brophy has demonstrated that humans more than 20,000 years ago had precise knowledge of major star coordinates, the location of our Sun, and the dimensions of our galaxy. (Gods, Genes, and Consciousness)

Indus Valley






South America




North America