The article casually mentions a "notorious" 775 AD event which I'd never heard about (insert relevant XKCD here), so here's Wikipedia: The event of 774 had no

The article casually mentions a "notorious" 775 AD event which I'd never heard about (insert relevant XKCD here), so here's Wikipedia: The event of 774 had no significant consequences for life on Earth, but had it happened in modern times, it might have produced catastrophic damage to modern technology, particularly to communication and space-borne navigation systems. https://en.wikipedia.org/wiki/774%E2%80%93775_carbon-14_spike https://en.wikipedia.org/wiki/774%E2%80%93775_carbon-14_spik... Interestingly, the identification of the cause of the 775 AD event with a huge solar flare came from the same researchers as this story.