“In consequence of the precession of the equinoxes, the starry heavens are continually changing their aspect from every portion of the earth’s surface. The early races of mankind beheld in the far north the glorious constellations of the southern hemisphere rise before them, which, after remaining long invisible, will again appear in those latitudes after a lapse of thousands of years⁠ ⁠… The Southern Cross began to become invisible in 52° 30′ north latitude 2900 years before our era, since, according to Galle, this constellation might previously have reached an altitude of more than 10°. When it disappeared from the horizon of the countries of the Baltic, the great Pyramid of Cheops had already been erected more than 500 years.”

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Iliad , XVIII :⁠—