Summary:
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In 1204, a Japanese poet saw red lights in the north – 800 years later, scientists solve the mystery.
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Fujiwara no Teika’s journal reveals a massive solar storm in medieval Japan, confirmed by a 2026 study.
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Tree rings reveal an 800-year-old solar storm, warning of shorter cycles and potential dangers for astronauts today.
In 1204, a Japanese poet in Kyoto had seen in the north what no one could explain: three nights after night, successive red lights. And, now, 800 years later, the scientists have solved the riddle – and what they have discovered makes them believe that they have something to be on the lookout for in our sun.
A Poet Noticed Something Strange
Fujiwara no Teika tells of red lights in the north-eastern sky above Kyoto in his journal–no one in medieval Japan was aware of it.
It Was a Massive Solar Storm
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On April 10, 2026, a study in the Proceedings of the Japan Academy confirmed it was indeed a strong solar storm and was able to unravel an 800-year-old riddle.
Tree Rings Cracked the Code
The researchers further examined radioactive carbon in the rings of the trees (asunaro) in northern Japan by using the information of carbon -14 to determine past solar cycles to establish the date of the storm.
The Sun Ran a Shorter Cycle
The then cycle of the sun was only seven or eight years, as compared with the eleven years we now have, and this translates to an excessive amount of solar action in comparison with that we are suffering.
Three Nights Were a Red Flag
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The auroras normally disappear after a 24-hour period. The three nights still ahead, Kyoto had in sight, were likely to bring a lot of solar flares – a message, not a performance, with which the sun was attempting to communicate.
Multiple Civilizations Witnessed It
The existence of Japanese, Chinese, Korean, Italian, French, and German records was used to determine the extreme solar activity that had taken place in the late 12 th and early 13 th centuries – a worldwide event that was hidden in the literature of that time.
A Separate Storm Was Found Too
Incidence of protons was not verified to have taken place on the Teika auroras. A solar storm was seen in 1200-1201 with a carbon-14 construction spike, and this coincided with reports in China of red aurora.
Sub-Extreme Storms Are the Real Danger
Professor Hiroko Miyahara concludes this work by discovering that there actually exist sub-extreme events of solar protons with 10-30 percent smaller than giant events, but with too frequent occurrence to be ignored, capable of causing devastating damage.
Astronauts Face Real Risk Today
The sun will even be throwing a near-lightning speed towards the earth during the Apollo 16-17. Even the same thing that happened during any mission that a crew is involved in nowadays would have been catastrophic.
Ancient Poetry Is Now a Science Tool
The group is still researching the new trends of the sun. One of the most useful records, as far as the exploration of space weather by humanity is concerned, has been through the journal of one of the medieval poets.