Ancient solar eclipse records reveal how Earth's rotation has changed

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Researchers looked through historical documents dating back to the fourth century to find total solar eclipses.

Ancient records of total solar eclipses, like this one pictured in Casper, Wyoming, have been discovered.

Records of eclipses observed around 1,500 years ago have revealed the history of Earth's rotation and how our planet's movement has changed through recent human history. Researchers searched through records from the Byzantine Empire — the eastern half of the Roman Empire that continued on after the fall of the Western Roman Empire — from the fourth to seventh centuries A.D. — and identified five totalseen around the Eastern Mediterranean, pinpointing their probable times and locations. Previously, solar eclipse accounts from this time were sparse.

Because eclipses can provide information about our planet's movement, records like these can be important tools for understanding the variability of 's rotation throughout history. However, our ancestors recorded astronomical events without noting key information needed by astronomers today, so identifying the correct times, locations and extents of historical eclipses is often difficult.

 

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The Earth's rotation has changed? Who's responsible for this? We need activists on this right now! OMG! This is terrible. Is there a Go-Fund me page?

If we all run one way it will get it going again.

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