The Guardian has a report suggesting that the dangers posed by solar storms and the like may have been worryingly underestimated, based on evidence trapped in the Greenland ice from an event around 660 BC.
https://www.theguardian.com/science/2019/mar/11/radioactive-particles-from-...?
Of course, we don't have any records about it written by those alive at the time. However, go back to an event in the eighth century and we have.
"Annus Domini 774. This year also appeared in the heavens a red crucifix, after sunset . . . and wonderful serpents were seen in the land of the South-Saxons."
So said the Anglo-Saxon Chronicle. So yes, something like this may knock out GPS, TV and phone signals and much else but . . . Wonderful Serpents!
When's the next one due?
T.
