5 October 2025 The Future is the Product of the Past

Cosmic cataclysm 1,500 years ago may have caused downfall of the Hopewell Culture

Researchers at the University of Cincinnati find evidence of cosmic cataclysm 1,500 years ago at 11 ancient sites in three states stretching across the Ohio River Valley.

This was home to the Ohio Hopewell, part of a notable Native American culture found across what is now the eastern United States.

The Ohio Hopewell Culture or Hopewell Culture was a widely dispersed set of Native American population connected by a common network of trade routes from 100 BC to AD 500 in the Middle Woodland period.

The comet’s glancing pass rained debris down into the Earth’s atmosphere, creating a fiery explosion. UC archaeologists used radiocarbon and typological dating to determine the age of the event.

The airburst affected an area bigger than New Jersey, setting fires across 9,200 square miles between the years A.D. 252 and 383. This coincides with a period when 69 near-Earth comets were observed and documented by Chinese astronomers and witnessed by Native Americans as told through their oral histories.



📣 Our WhatsApp channel is now LIVE! Stay up-to-date with the latest news and updates, just click here to follow us on WhatsApp and never miss a thing!!



University of Cincinnati researchers take sediment samples at a Hopewell site at the confluence of the Ohio and Great Miami rivers. From left they are anthropology student Louis Herzner, biology student Stephanie Meyers, anthropology professor Kenneth Tankersley and UC geology alumnus Stephen Meyers. Photo/Larry Sandman
University of Cincinnati researchers take sediment samples at a Hopewell site at the confluence of the Ohio and Great Miami rivers. From left they are anthropology student Louis Herzner, biology student Stephanie Meyers, anthropology professor Kenneth Tankersley, and UC geology alumnus Stephen Meyers. Photo/Larry Sandman

The study, published in the Nature journal Scientific Reports found an unusually high concentration and diversity of meteorites at Hopewell sites compared to other time periods. The meteorite fragments were identified from the tell-tale concentrations of iridium and platinum they contained. They also found a charcoal layer that suggests the area was exposed to fire and extreme heat.

In his lab, lead author Kenneth Tankersley, a professor of anthropology in UC’s College of Arts and Sciences, held up a container of tiny micrometeorites collected at the sites. A variety of meteorites, including stony meteorites called pallasites, were found at Hopewell sites.

“These micrometeorites have a chemical fingerprint. Cosmic events like asteroids and comet airbursts leave behind high quantities of a rare element known as platinum,” Tankersley said. “The problem is platinum also occurs in volcanic eruptions. So we also look for another rare element found in nonterrestrial events such as meteorite impact craters — iridium. And we found a spike in both, iridium and platinum.”

The Hopewell people collected the meteorites and forged malleable metal from them into flat sheets used in jewelry and musical instruments called pan flutes.

Beyond the physical evidence are cultural clues left behind in the masterworks and oral histories of the Hopewell. A comet-shaped mound was constructed near the epicenter of the airburst at a Hopewell site called the Milford Earthworks.

Various Algonquin and Iroquoian tribes, descendants of the Hopewell, spoke of a calamity that befell the Earth, said Tankersley, who is Native American.

“What’s fascinating is that many different tribes have similar stories of the event,” he said.

“The Miami tell of a horned serpent that flew across the sky and dropped rocks onto the land before plummeting into the river. When you see a comet going through the air, it would look like a large snake,” he said.

“The Shawnee refer to a ‘sky panther’ that had the power to tear down forest. The Ottawa talk of a day when the sun fell from the sky. And when a comet hits the thermosphere, it would have exploded like a nuclear bomb.”

University of Cincinnati anthropology professor Kenneth Tankersley uses a magnet to show how micrometeorites collected at 11 Hopewell sites contain metals such as iron. UC's analysis found they also contain high levels of platinum and iridium. Photo/Michael Miller
University of Cincinnati anthropology professor Kenneth Tankersley uses a magnet to show how micrometeorites collected at 11 Hopewell sites contain metals such as iron. UC’s analysis found they also contain high levels of platinum and iridium. Photo/Michael Miller

And the Wyandot recount a dark cloud that rolled across the sky and was destroyed by a fiery dart, Tankersley said.

“That’s a lot like the description the Russians gave for Tunguska,” he said of a comet airburst documented over Siberia in 1908 that leveled 830 square miles of forest and shattered windows hundreds of miles away.

“Witnesses reported seeing a fireball, a bluish light nearly as bright as the sun, moving across the sky. A flash and sound similar to artillery fire was said to follow it. A powerful shockwave broke windows hundreds of miles away and knocked people off their feet,” according to a story in EarthSky.

UC biology professor and co-author David Lentz said people who survived the airburst and its fires would have gazed upon a devastated landscape.

“It looks like this event was very injurious to agriculture. People didn’t have good ways to store corn for a long period of time. Losing a crop or two would have caused widespread suffering,” Lentz said.

And if the airburst leveled forests like the one in Russia, native people would have lost nut trees such as walnut and hickory that provided a good winter source of food.

“When your corn crop fails, you can usually rely on a tree crop. But if they’re all destroyed, it would have been incredibly disruptive,” Lentz said.

UC’s Advanced Materials Characterization Center conducted scanning electron microscopy and energy dispersive spectrometry of the sediment samples. Inductively coupled plasma mass spectrometry was employed at the University of Georgia’s Center for Applied Isotope Studies. The U.S. Geological Survey provided stable carbon isotope analysis.

Despite what scientists know, there is still much they do not, Lentz said.

“It’s hard to know exactly what happened. We only have a few points of light in the darkness,” he said. “But we have this area of high heat that would have been catastrophic for people in that area and beyond.”

Now researchers are studying pollen trapped in layers of sediment to see how the comet airburst might have changed the botanical landscape of the Ohio River Valley.

Co-author Steven Meyers, a UC geology alumnus, said their discovery might lead to more interest in how cosmic events affected prehistoric people around the world.

“Science is just a progress report,” Meyers said. “It’s not the end. We’re always somewhere in the middle. As time goes on, more things will be found.”

UNIVERSITY OF CINCINNATI

Related Articles

1900-year-old Child’s Nightgown with intriguing knots found in the Cave of Letters in the Judean Desert

5 October 2023

5 October 2023

The Cave of Letters in Israel is one such site that has yielded a large number of papyrus letters and...

A 1,700-year-old trident discovered in Assos ancient city in Türkiye

10 October 2023

10 October 2023

An iron trident, believed to be used for fishing, dating to the 3rd or 4th century A.D. has been discovered...

Unearthing the Origins of Carnival: Evidence of Ancient Summer Festivals in Pre-Colonial Brazil

11 February 2025

11 February 2025

A new study suggests that pre-colonial people in Brazil gathered during the summer months to feast on migratory fish and...

Over 70 Archaeological Sites Identified in Canada’s Chilcotin Region, Uncovering Secwépemc Pit Houses Over 4,000 Years Old

29 March 2025

29 March 2025

Recent archaeological findings indicate that the Secwépemc people’s historical presence in the Chilcotin region of British Columbia, Canada, is more...

Karahantepe; It will radically change the way we look at the Neolithic Age

1 June 2022

1 June 2022

Findings on settled village life in the ongoing excavations in Karahantepe will profoundly change our knowledge of the Neolithic Age....

As Thin as Modern Tools: World’s Oldest Steel Acupuncture Needles Discovered in China

6 July 2025

6 July 2025

In a discovery that reshapes the history of traditional Chinese medicine, archaeologists have unearthed what experts now confirm to be...

Scientists have discovered an ancient cemetery of flying reptiles roaming the Atacama desert of Chile 100 million years ago

7 April 2022

7 April 2022

In Chile, an unusual cemetery has been discovered that contains the well-preserved remains of prehistoric flying reptiles that flew over...

A Stunning Jade mask discovered in tomb of Maya King in Guatemala

28 January 2024

28 January 2024

Archaeologists excavating a looted pyramid tomb in the ruins of a Mayan city in Peten, northeast Guatemala, have discovered a...

Archaeologists Uncover Exceptional Roman Mausoleum Near Lyon, Modeled After Augustus’ Tomb

23 August 2025

23 August 2025

Archaeologists in France have unearthed a remarkably well-preserved Roman mausoleum in Saint-Romain-en-Gal, near Lyon, that was modeled on the famous...

The 7th-Century Lombard Kings’ Tombs Found in Pavia, Italy

24 December 2024

24 December 2024

The excavations, conducted between September and October by the Catholic University, uncovered numerous burials attributed, on the one hand, to...

Archaeologists Discover 2,000-Year-Old Jug in Tajikistan Bearing Woman’s Name

4 July 2025

4 July 2025

In a discovery of rare historical and cultural significance, archaeologists in southern Tajikistan have uncovered a 2,000-year-old clay jug bearing...

The 3,200-year-old perfume of Tapputi, the first female chemist in history, came to life again

24 July 2022

24 July 2022

One of the scent formulas written in Akkadian on clay tablets by Tapputi, known as the world’s first female perfumer...

World’s Smallest Stegosaurus Track Found

14 March 2021

14 March 2021

The smallest trace of stegosaurus in the world that lived 155 million years ago was found. Stegosaurus, a herbivorous dinosaur,...

Thousand-year-old bone skate discovered in Czech Republic

20 March 2024

20 March 2024

Archaeologists from the central Moravian city of Přerov, Czech Republic have announced a unique discovery. While carrying out excavations in...

Statue of Roman Emperor Hadrianus found in western Turkey

14 September 2021

14 September 2021

Excavations in the ancient city of Alabanda in the western province of Aydin have uncovered pieces of the statue of...