On Coronal Mass Ejections: "The Carrington event was relatively minor. Faced with a surge of high-energy particles characteristic of a Miyake event—one powerful enough to leave its mark in the rings of trees—the induced current would flood the thousands of #satellites that encircle Earth, crippling them for months and possibly years. Power grids would topple immediately, leaving anything reliant on electricity, like lights, electric vehicles, and ventilators, inoperable. Astronauts would undoubtedly receive lethal doses of radiation, and even people on board airplanes could encounter dangerous levels." https://daily.jstor.org/the-carrington-event-of-1859-disrupted-telegraph-lines/