TechRed sky mystery of 774 AD: Cosmic events reveal risks

Red sky mystery of 774 AD: Cosmic events reveal risks

In 774 AD, a large red cross illuminated the night sky over England, causing a significant stir among the Anglo-Saxons. It was regarded as a divine sign, appearing just after a period of turbulent political changes. This remarkable phenomenon was recorded in the Anglo-Saxon Chronicle, but it wasn't until 2012 that Jonathon Allen, a student at the University of California, Santa Cruz, discovered it. The impetus for this discovery was research by Japanese scientists who detected traces of intense radiation in cedars from 774.

Years ago, the sky was illuminated by a mysterious flash - illustrative photo
Years ago, the sky was illuminated by a mysterious flash - illustrative photo
Images source: © Getty Images | Kazzaz Photography

2:02 PM EST, November 12, 2024

In 2012, a team of Japanese scientists led by Fusa Miyake discovered extraordinarily high levels of the carbon-14 isotope in the rings of cedars from the years 774-775, as reported by the service Twoja Pogoda. These levels were 20 times higher than the norm, indicating exceptionally strong radiation.

Mysterious event in the sky

Although such anomalies in carbon-14 often result from strong solar flares, this theory did not seem to fit in this case. Firstly, there were no records of solar flares from that period. Secondly, even the strongest solar flares known to humanity would not be sufficient to cause such changes in carbon-14 levels.

One theory suggests the cause could have been supernova explosions—explosions of stars that release vast amounts of gamma radiation. While a supernova explosion could theoretically cause such radiation, there are no records of a supernova explosion close enough to Earth in the years 774-775.

However, Allen suggests that the supernova might have been hidden behind a dust cloud, partially obscuring the star's light and creating the effect of a red cross visible only at dusk. Astronomer Geza Gyuk supported this hypothesis, stating that the cross shape could have been formed due to the scattering of light by the dust cloud.

Yet, Allen’s interpretation is not the only theory. As early as 1870, John Jeremiah proposed an explanation suggesting that the red cross could have resulted from the aurora borealis, known for creating colorful bands of light in the sky. Another hypothesis suggests that the cross could have been an optical illusion caused by ice crystals in the atmosphere. Sunlight passing through these crystals might have produced an effect resembling a cross.

Although this phenomenon remains a mystery, its potential implications for the modern world are serious. If a similar burst of radioactivity were to happen today, it could destroy critical technologies such as satellites or communication networks and threaten energy infrastructure. Therefore, research into such phenomena is important and can help us understand and prepare for future unpredictable cosmic events.

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