An ESA simulation shows a Carrington-level solar storm would devastate satellites, GPS and power grids worldwide. The test modelled an X45-class solar flare hitting Earth in 3 stages: radiation, high-energy particles, and a CME. “It’s not if, but when,” ESA warned. | Helsinki Times

1.5K views · 21 reactions | In “Hear Me Out,” a new video series from Los Angeles Times Opinion, readers who’ve written letters to the editor talk about their views and the personal experiences that shaped them. | Los Angeles Times | Facebook