An that was only one half of the ship.
Meanwhile, because the explanations are necessarily consensus thinking, no one dares to examine the possibility that the knowledge came from the Library of Alexandria via a preexisting now vanished civilization destroyed during the North American comet strikes in 10800BC and the ushering in of the Younger Dryas Age and its floods.
The Ancient Greeks knew the sun was the center of the solar system - but these ‘scientists’ insist the the model to use is the European Dark Age model with Earth as the center of the solar system.
So take their conclusions with a grain or two of salt.
Knew is an awfully big claim. A few like Aristarchus of Samos theorized on it. Others rejected it because if the Earth moved around the sun you would be able see the positions of the stars change over the course of the year. You can, but even the nearest changes less than an arcsecond which the Greeks could never have seen. It wasn't discovered until 1838.