Thanks DCH. I recognise that Otto Neugebauer is the principle mainstream accepted authority on ancient views on precession. However, he has a method of enquiry and judgment that in my view fails to see the depth of ancient insight in astronomy.
A biography at
http://www.nap.edu/html/biomems/oneugebauer.pdf says “Neugebauer was always at pains to lay the ghost of profound Egyptian astronomical wisdom.” My view is that these pains indicate error, in that Neugebauer was wrong in his analysis of precession due to faulty method in analysis of ancient sources, due to treatment of extant data as representative. With what that biography calls “particular perversity”, Neugebauer began the section on Egypt in his
History of Ancient Mathematical Astronomy with the provocative sentence, “Egypt has no place in a work on the history of mathematical astronomy.”
Such a statement about the land of the pyramids, Karnak and Dendera looks absurd. If that is a bold claim on my part, I am happy to discuss it, and if possible, to be proved wrong. Neugebauer asserted that the Babylonians had the ability to predict eclipses but they somehow failed to see and measure that the equinoxes precess along the ecliptic path of the sun. This is an unbelievable disjunction, in that the science needed to measure the moon against the stars easily provides data to measure the shift of the equinoxes. His dismissal of the Pan-Babylonian scholarly hypothesis of Babylonian knowledge of precession appears to me to be grounded in selective and flawed method by Neugebauer, restricting to things that can be easily proved and ignoring things that require deeper analysis, creating a distorted and unbalanced view that excises the lost ideas of mystery religion from the heart of ancient astronomy.
The Babylonians could measure and record the position of every visible star and planet in the sky for around a thousand years of continuous civilization. It appears the Babylonians used
ziggurats as observation platforms every night, enough to calculate the draconic, anomalistic and synodic motions of the moon. However, records of the priestly function of the ziggurats in connecting heaven and earth have not survived, although Herodotus mentioned their use as shrines. Babylonian astronomy was enough for Hipparchus to reconstruct precession from Babylonian star records of the position of Spica against the equinox using the total lunar eclipse on
21 March 134 BC, (2147 years ago today). This eclipse next to Spica will be closely repeated with the first blood moon of the 2014-15 tetrad on
15 April 2014.
Neugebauer unfortunately found nothing in Babylonian astronomy to prove to his satisfaction that they were aware of precession. Neugebauer argues the Babylonian astronomer priests failed to notice that the whole 'wheels within wheels' (to borrow a concept from the noted
Babylonian resident Ezekiel) shebang moved the stars by one degree per lifetime against the seasonal cross of the solstices and equinoxes. Just to note now as a major theme deserving more discussion, Ezekiel’s description of the four living creatures refers to the stars Aldebaran in the Bull, Regulus in the Lion, Antares in the Eagle/Scorpion and Fomalhaut in the Man, the cardinal stars of the Ages of Taurus and Aquarius.
The errors of Neugebauer go to method and intent. The Christian church sought to destroy all traces of the Gnostic cosmic ladder it had climbed to construct its dream of Jesus Christ Supernatural. This destruction of Gnostic knowledge was so successful, striking fear into the heart of almost anyone who possessed heretical literature for more than a thousand years, that the evidence for the ancient knowledge is now sparse and must be sought in concealed and fragmentary sources such as the loaves and fishes miracle. Christians tend to take this sparse evidentiary framework regarding the extent of ancient astronomy as somehow complete, using it to bolster a traditional emotional supernatural myth regarding Christ, without reference to the real astronomical framework.
The beheading of John the Baptist described in Mark 6 just before the loaves and fishes miracle illustrates, by my reading, that knowledge of precession was the subject of extreme repression in the ancient world. My view is that this imperial repression was a response to precession as the originary scientific structure for the Christ myth. Mark tells us it was more important for Salome and her connections to get the Baptist's head, and thereby silence the watchers, than to get half of Herod's kingdom.
The evidentiary method used by Neugebauer, as also advocated by
Gary D. Thompson, fails to engage the real evidence, which should rather be looked for in what Heidegger called the fugitive traces of the divine.
Martin Heidegger wrote:'To be a poet in a destitute time means to attend, singing, to the trace of the fugitive gods. This is why the poet in the time of the world's night utters the holy.