We continue this morning with Jonathan Grays Dead Men's Secrets
Tantalising Hints of a Lost Super Race.
As I first researched this, Earth’s unmanned spacecraft Voyager II was hurtling beyond Uranus toward the planet Neptune for a rendezvous in 1989. On August 24 that year (yes, the exact day was known), it was calculated to swing around past Neptune, then head off out of the solar system forever, into unknown deep space.

Was it as recently as the nineteenth century that most people thought the earth we live on was flat, center of the universe, surrounded by a distant vault of fixed stars? And that the planets and sun moved around us? That’s right! “The earth cannot be a ball,” said one prominent scientist, “otherwise the people on the lower half would fall into the void.” Even the great Kepler not so much earlier had said there were only 1,005 stars.

So long did ignorance prevail that we assume it was always so.

Now enjoy the taste of a surprise! Contrary to history as we know it, in that remote period we call “prehistory,” there subsisted an embarrassing wealth of astronomical knowledge. And may I suggest that the more one looks into it, the more one feels that a race of scientific giants has preceded us.

The conclusion is unavoidable that the astronomers of Babylon, India and Egypt either possessed sophisticated instruments themselves, or they were the custodians of a prehistoric science—that of a Mother Civilization.

Even later, among the classical Greeks and Romans, there were sages who still had access to a body of knowledge extending back into the dim past.

The nations with particular knowledge cited below were not alone in possessing this. Such a science must have been universal at first, but remember, the surviving evidence is fragmentary.

https://exploringrealhistory.blogspot.com/2023/02/part-4-dead-mens-secrets-tantalising.html