What are the chances of a hazardous solar superflare?

By Stephen Battersby, November 19, 2019

On March 1, 2010, the Kepler space telescope spotted a distant star brighten slightly. Compared with the ferocious intensity of a supernova or gamma-ray burst, this event was feeble. It was merely a stellar flare, and by no means the most powerful flare ever seen. Nevertheless, it was ominous.

https://www.pnas.org/doi/10.1073/pnas.1917356116