And the main thing is that we will never know how they all did it my friend.
Sure, they had star gazers, but planet gazers are a totally different kettle of fish. So many secrets lies locked up in the vaults of the distant past.
Many "professional" opinions are aired, such as they must have had alien help and I even read somewhere that the Egyptian Pyramids were exact landing beacons built by aliens for the landing of their space ships.
But what do we know?
Blessings also to you guys!