Traces of Giant, 2,700-Year-Old Solar Storm Detected in Greenland Ice
Evidence of an unusually strong solar storm that hit Earth in 660 BCE has been detected in Greenland ice cores—a finding which shows we still have lots to learn about these disruptive events. An extreme form of solar storm, known as a solar proton event (SPE), struck our planet 2,679 years ago, according to new…