Something Hit Earth in 774 AD - And Every Tree on the Planet Recorded It
Sleepy Time Origins
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https://open.spotify.com/show/033InBB...
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What hit Earth in 774 AD—and why did trees around the world record it when people didn’t?
A sudden radiocarbon spike in ancient tree rings points to an extraordinary cosmic-ray event. Follow the evidence from Japanese cedars to polar ice as scientists investigate whether an extreme solar storm, a gamma-ray burst, or something else caused it.
Discover how these “Miyake events” helped date Norse activity in North America—and what a similar event could mean for our wired world. Subscribe for more mysteries hidden in history and science.
Sources:
“A signature of cosmic-ray increase in AD 774–775 from tree rings in Japan” — Fusa Miyake et al.
“Tree rings reveal globally coherent signature of cosmogenic radiocarbon events in 774 and 993 CE” — Ulf Büntgen et al.
“Multiradionuclide evidence for the solar origin of the cosmic-ray events of AD 774/5 and 993/4” — Florian Mekhaldi et al.
“A Galactic short gamma-ray burst as cause for the 14C peak in AD 774/5” — V. V. Hambaryan and R. Neuhäuser
“Evidence for European presence in the Americas in AD 1021” — Margot Kuitems et al.
00:00 A Year Hidden in Wood
04:43 Act 1: How a Tree Keeps a Calendar
13:04 Act 1: Fusa Miyake and the Japanese Cedar Rings
21:13 Act 1: What the Spike Does-and Does Not-Tell Us
29:38 Act 2: The Signal Beyond Japan
38:31 Act 2: The Independent Record in Polar Ice
47:01 Act 3: The Leading Suspect-An Extreme Solar Particle Storm
56:15 Act 3: The Gamma-Ray Burst Proposal
1:05:40 Act 3: Testing the Other Possibilities
1:15:16 Act 4: Charlemagne’s Francia in 774
1:23:55 Act 4: Tang China After the An Lushan Rebellion
1:33:09 Act 4: Life Across the Abbasid Caliphate
1:42:24 Act 4: The Chronicle’s Red Crucifix
1:50:57 Act 5: Another Known Year-The 993 Event
2:00:28 Act 5: Older Events and a Longer Cosmic Record
2:10:19 Act 5: Dating a Norse Year at L’Anse aux Meadows
2:18:06 A Quiet Record, a Wired World
Kindly Note:
Every story on this channel is rooted in a deep respect for history. We work as directors and editors, using AI tools to assist with research and drafting the script while we shape the narrative and verify the facts. The narration is delivered by a digital replica of a professional voice actor, and the visuals are individually crafted artistic impressions created with AI. Even with these tools, bringing a story of this depth to life takes many hours of work.
Please keep in mind that while the narrative is grounded in thorough historical research, its main purpose is storytelling for entertainment and relaxation. It is not meant to serve as a formal academic or scientific source. Thank you for your trust and support.
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Something Hit Earth in 774 AD - And Every Tree on the Planet Recorded It
Sleepy Time Origins
12,445 views
🎧 Listen on Spotify:
https://open.spotify.com/show/033InBB...
https://open.spotify.com/show/4r9aY3o...
Interested in the 12 unexplained human mysteries? Get our book: https://sleepytimehistory.com
What hit Earth in 774 AD—and why did trees around the world record it when people didn’t?
A sudden radiocarbon spike in ancient tree rings points to an extraordinary cosmic-ray event. Follow the evidence from Japanese cedars to polar ice as scientists investigate whether an extreme solar storm, a gamma-ray burst, or something else caused it.
Discover how these “Miyake events” helped date Norse activity in North America—and what a similar event could mean for our wired world. Subscribe for more mysteries hidden in history and science.
Sources:
“A signature of cosmic-ray increase in AD 774–775 from tree rings in Japan” — Fusa Miyake et al.
“Tree rings reveal globally coherent signature of cosmogenic radiocarbon events in 774 and 993 CE” — Ulf Büntgen et al.
“Multiradionuclide evidence for the solar origin of the cosmic-ray events of AD 774/5 and 993/4” — Florian Mekhaldi et al.
“A Galactic short gamma-ray burst as cause for the 14C peak in AD 774/5” — V. V. Hambaryan and R. Neuhäuser
“Evidence for European presence in the Americas in AD 1021” — Margot Kuitems et al.
00:00 A Year Hidden in Wood
04:43 Act 1: How a Tree Keeps a Calendar
13:04 Act 1: Fusa Miyake and the Japanese Cedar Rings
21:13 Act 1: What the Spike Does-and Does Not-Tell Us
29:38 Act 2: The Signal Beyond Japan
38:31 Act 2: The Independent Record in Polar Ice
47:01 Act 3: The Leading Suspect-An Extreme Solar Particle Storm
56:15 Act 3: The Gamma-Ray Burst Proposal
1:05:40 Act 3: Testing the Other Possibilities
1:15:16 Act 4: Charlemagne’s Francia in 774
1:23:55 Act 4: Tang China After the An Lushan Rebellion
1:33:09 Act 4: Life Across the Abbasid Caliphate
1:42:24 Act 4: The Chronicle’s Red Crucifix
1:50:57 Act 5: Another Known Year-The 993 Event
2:00:28 Act 5: Older Events and a Longer Cosmic Record
2:10:19 Act 5: Dating a Norse Year at L’Anse aux Meadows
2:18:06 A Quiet Record, a Wired World
Kindly Note:
Every story on this channel is rooted in a deep respect for history. We work as directors and editors, using AI tools to assist with research and drafting the script while we shape the narrative and verify the facts. The narration is delivered by a digital replica of a professional voice actor, and the visuals are individually crafted artistic impressions created with AI. Even with these tools, bringing a story of this depth to life takes many hours of work.
Please keep in mind that while the narrative is grounded in thorough historical research, its main purpose is storytelling for entertainment and relaxation. It is not meant to serve as a formal academic or scientific source. Thank you for your trust and support.