Julian Dossett is a freelance writer living in Santa Fe, New Mexico. He primarily covers the rocket industry and space exploration and, in addition to science writing, contributes travel stories to New Mexico Magazine. In 2022 and 2024, his travel writing earned IRMA Awards. Previously, he worked as a staff writer at CNET.
A massive eruption 74,000 years ago affected the whole planet – archaeologists use volcanic glass to figure out how people survivedScientists watch supernova shockwave shoot through a dying star for 1st timeA team of international researchers say they've uncovered new data on the world's first recorded solar eclipse using a surprising source — ancient Chinese texts.
These findings could help us understand more about the progression of the Earth's rotation through the centuries. The eclipse in question took place on July 17, 709 BCE, according to a chronicle titled"Spring and Autumn Annals." The caveat here is that this record was compiled around two or three centuries after the eclipse happened. The chronicle comes from the court of Lu Duchy, a vassal state that existed during the Zhou dynasty. "What makes this record special isn't just its age, but also a later addendum in the 'Hanshu' based on a quote written seven centuries after the eclipse. It describes the eclipsed sun as 'completely yellow above and below," lead author Hisashi Hayakawa, a researcher from Nagoya University in central Japan, saidMoon blocks satellite views of the sun before lunar eclipse | Space photo of the day for Sept. 9, 2025 According to Hawakawa, this description has been historically associated with a solar corona — the outermost layer of the sun, which peaks out around the edges of the moon as the moon passes between the Earth and sun during an eclipse."If this is truly the case, it represents one of the earliest surviving written descriptions of the solar corona," he said. The team tried verifying the record of the eclipse by modeling the Earth's rotation speed during this time. But they figured out that the eclipse wouldn't be visible from Qufu, the capital city of Lu Duchy, where the chronicle was compiled. So, they looked at historical geography and archaeological excavation reports. They found out that previous studies used coordinates that were about 4.79 miles away from the ancient capital. "This correction allowed us to accurately measure the Earth's rotation during the total eclipse, calculate the orientation of the Sun's rotation axis, and simulate the corona's appearance," Hayakawa said.Breaking space news, the latest updates on rocket launches, skywatching events and more!Receive email from us on behalf of our trusted partners or sponsors This newly improved dataset, the researchers say, fixes errors in previous studies that looked at the Earth's rotation."Additionally, it improves the accuracy of dating and reconstructing historical astronomical events," coauthor Mitsuru Sôma, a researcher from Japan's National Astronomical Observatory, said in a statement. The one reason why this centuries-old record of an eclipse exists is due to an ancient belief that celestial events carry omens that were related to events of the time."They believed strange sky phenomena indicated political wrongdoing by emperors, which motivated careful tracking of eclipses, auroras, and other astronomical events," the release states.studies from dating radiocarbon in tree rings that give scientists data on the levels of cosmic rays from this time period. "Some of our ancestors were very skilled observers," coauthor Dr. Meng Jin, Lockheed Martin Solar and Astrophysics Laboratory, said in a statement."When we combine their careful records with modern computational methods and historical evidence, we can potentially find new information about our planet and our star from thousands of years ago."Julian Dossett is a freelance writer living in Santa Fe, New Mexico. He primarily covers the rocket industry and space exploration and, in addition to science writing, contributes travel stories to New Mexico Magazine. In 2022 and 2024, his travel writing earned IRMA Awards. Previously, he worked as a staff writer at CNET. He graduated from Texas State University in San Marcos in 2011 with a B.A. in philosophy. He owns a large collection of sci-fi pulp magazines from the 1960s.Watch the 'PC Gaming Show: Most Wanted' for updates on High on Life 2, Remnant Protocol, plus more cool sci-fi & space games
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