Forget Carrington event, this is the WORST solar storm in history; it can strike again!

tech.hindustantimes.com:

When it comes to the worst ‘recorded' solar storms in history, the first to come to mind is the solar storm of 1859, which is also known as the Carrington event. It was so powerful that it caused sparks and fires in telegraph machines and caused power grid failures. But, it is far from the worst solar storms that our planet has experienced. Many astronomers and geologists have found evidence that suggests in 774 CE, a solar storm hit the Earth and it was so powerful that it started forest fires. The terrifying incident is known as the Miyake event. Although scientists have not been able to prove whether it was caused by a solar storm beyond doubt, a study has found more conclusive evidence in support of it.

The data comes from a study published in Nature Journal where a group of Japanese researchers analyzed tree ring data to find out about the existence of this solar storm. According to it, this particular solar event took place between 774–775 CE. It is estimated that its intensity was 10 times higher than the Carrington event. The evidence was found in Cedar trees in Japan which all show a huge spike in carbon-14. What is truly terrifying is that the researchers found that it was not an isolated event and such storms have regularly plagued the Earth with a gap of roughly 1000 years.

For years, researchers have turned to technology to research tree rings in order to determine the age of major historic events. This is done by checking the content of tree rings and noting any peculiarities. But while a spike in radiocarbon would indicate a cosmic event, it does not necessarily have to be a solar storm. It could have been a supernova explosion as well. This is where another study conducted by a team of researchers led by