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A 2,700-year-old solar eclipse just revealed something surprising about Earth

Researchers used a corrected ancient location to tighten estimates of Earth’s rotation and examine possible evidence of early solar coronal activity.

Summary by Science Daily
A solar eclipse recorded more than 2,700 years ago is revealing surprising secrets about Earth's rotation and the Sun's ancient behavior. By correcting an eight-kilometer error in the location of an ancient Chinese capital, scientists were able to reconstruct a total solar eclipse that occurred in 709 BCE and obtain more accurate measurements of how fast Earth was spinning at the time.

9 Articles

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Study of an eclipse that occurred more than 2,000 years ago provides data on the Earth and the solar corona

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An ancient Chinese chronicle allowed scientists to reconstruct solar activity and calculate how Earth’s rotation has changed.

·Guayaquil, Ecuador
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An international team of researchers has reexamined one of the oldest and most accurate records of a total solar eclipse, obtaining unique data on how...

Science and Heitech: An international group of astronomers and historians used ancient Chinese chronicles to clarify the speed of the Earth's rotation over 2,700 years ago.

An international team of scientists reviewed records of a total solar eclipse of 709 B.C. The adjustment of geographical coordinates allowed to clarify the data on the rotation of the Earth and assess the state of solar activity.

·Kyiv, Ukraine
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Science Daily broke the news in Encinitas, United States on Monday, October 26, 2026.
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