Astronomical Stability
Very High Level 1Fact
Modern astronomical software can accurately retrocalculate celestial events back 5,000+ years
Evidence
November 30, 3340 BCE - Loughcrew eclipse carved in stone, verified by software
October 22, 2134 BCE - Chinese eclipse, earliest recorded in written history, matches calculations
Venus Tablet of Ammisaduqa (~1700 BCE) - 21 years of Venus observations match modern software
Saros cycle predictions from Babylon match modern calculations
NASA JPL ephemerides validated against centuries of observations
Stellarium, astronomical software, enables verification by anyone
Read in Context
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Verified Ancient Eclipses
"Multiple ancient eclipses carved in stone or recorded in writing match modern calculations..."
Depends On
Required By
This fact is foundational because it allows us to use astronomical software to test calendar claims against historical events. If celestial mechanics had been supernaturally altered, we couldn't trust these calculations.