100bn megaton superflares make "most Earth-like" planet a no-go

One of the planets earmarked as potentially most Earth-like is dissuading guests, with the discovery of vast superflares rendering it inhospitable. Researchers had believed Kepler-438b to be the most similar to our own planet as any discovered by the Kepler space telescope to-date, coming close both in size and temperature to Earth, but it turns out our suns are very …