A near-Earth comet that exploded over North America about 1,500 years ago.

Archaeologists recently found meteorites, microscopic particles, iridium and platinum, and burned charcoal-rich habitable surfaces at 11 Hopewell culture archaeological sites in three sprawling states. in the Ohio River Valley. Fortunately the Hopewells survived the catastrophic event, which occurred between 252 and 383 AD, which likely contributed to the decline of their civilization.

Comet Explosion.

“Direct positive evidence for catastrophic cosmic explosion and collision events has been found in the western hemisphere at the Cretaceous and Tertiary boundary about 65 million years ago and at the Younger Dryas boundary about 12,800 years ago” said Professor Kenneth Tankersley of the University of Cincinnati:

“Both of these events are linked to a global mass extinction, and they occurred before humans culturally evolved into complex, sedentary, agrarian-based societies.”


“The recent discovery of two Holocene cosmic impact events in Argentina (6,000 and 3,000 years ago) and one in Jordan (3,700 years ago), shows that these natural disasters are much more common than previously thought. previously suspected”.

“Between 1,800 and 1,431 years ago (220 and 589 AD), Chinese astronomers recorded 69 near-Earth comets, including Haley’s, located 0.09 astronomical units from Earth in 374. Sun (1,646 years ago). At this time, human communities and the resources they need to survive are at very high risk of being destroyed by a cometary explosion.”

They added: “Archaeological evidence of ancient cosmic impact events has been recovered from archaeological sites of various eras in Europe, the Near East and China.”

“In the western hemisphere, the Hopewell archaeological sites in the Ohio River valley have an unusually high concentration and diversity of meteorites when compared to all other cultural periods. These include iron meteorites, stony meteorites, and stony meteorites.”

Explosion simulation.

In their new study, Professor Tankersley and co-authors used radiocarbon dating and typical formatting to determine when that catastrophic explosion occurred.

They systematically studied 11 Hopewell sites in the Ohio River valley.

“Twenty-nine years of radiocarbon age establishes that the event occurred between 252 and 383 AD, the time when 69 near-Earth comets were recorded,” they said.


The researchers noticed an unusual concentration and diversity of meteorites compared with other time periods.

The meteorites have been identified to contain significant concentrations of iridium and the platinum they contain.

They also found a layer of coal indicating that the area had been exposed to fire and extreme heat.

“Microscopic objects have a chemical fingerprint. Cosmic events such as asteroids and cometary explosions leave behind large amounts of the rare element known as platinum,” said Professor Tankersley.

“The problem is that platinum also shows up in volcanic eruptions. So we’re also looking for another rare element found in non-planetary events like craters – iridium. And we found a spike in both iridium and platinum.”

The Hopewells collected meteorites and forged malleable metal from them into flat plates for jewelry and musical instruments called pan flutes.

Beyond the physical evidence are the cultural clues left behind in Hopewell’s holistic writings and oral histories.

A comet-shaped mound was built near the epicenter of the gas explosion at a Hopewell site known as the Milford Earth Works.

“Many Algonquin and Iroquoian tribes, descendants of the Hopewell people, have spoken of a catastrophe befalling the Earth,” said Native American Professor Tankersley.

“What’s fascinating is that many different tribes have similar stories about this event.”

“Miami is about a snake with horns that flies across the sky and drops rocks to the ground before plunging straight into the river. When you see a comet flying through the air, it looks like a big snake.”

“Shawnee refers to a ‘heavenly leopard’ that has the power to destroy the forest.”

“Ottawa talk about a day when the sun fell from the sky. And when a comet hits the atmosphere, it explodes like a nuclear bomb.”

“And Wyandot recounts a dark cloud that rolled across the sky and was destroyed by a flaming dart.”

“That’s very similar to the description the Siberians give Tunguska.”

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