AUBREY 56 · Discover
How AUBREY 56 compares today’s stellar field with approximately 2500 BCE through precession, local horizon and a curated star catalogue.
Precession
Earth’s rotational axis traces a slow cycle across the celestial sphere. As a result, the celestial pole and nearby pole-region stars are not fixed across deep time.
Polaris is today’s nearby northern marker. Around 2500 BCE, Thuban occupied a different relationship to the northern celestial pole.
Local sky
The display combines a historical epoch, the selected location, local sidereal time, a curated stellar catalogue and a local horizon. Hover or tap stars to reveal their names and calculated values.
The mode is educational and contemplative. It is not a professional ephemeris or proof of prehistoric stellar intention.
Evidence labels
AUBREY 56 labels what is calculated from the astronomical model, what is historically or archaeologically established, and what remains debated or interpretive. This separation is central to the product’s seriousness.
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