The Sun is still active enough to generate high-energy super X-class flares, according to new multi-spectral analyses of other nearby sun-like stars being presented at a meeting of the American Astronomical Society (AAS) in Florida.
Satellite-destroying X-flares from our own Sun are likely to occur only once every 250 to 350 years, but they could still have catastrophic effects on satellites, astronauts, and power grids, Edward Guinan, a Villanova University astronomer and the research lead, told me from Orlando.
“For the present Sun, statistically, we estimate about one X100 solar flare once per 300 years and a flare ten times larger as [happening] once every 18,000 years,” said Guinan.