A discussion highlights the potential catastrophic effects of a Coronal Mass Ejection (CME) on Earth, particularly if it breaches the planet's magnetic field. The last significant event, the Carrington Event of 1859, serves as a historical reference for the possible disruptions. A major consequence of a severe CME would be the necessity for a full blackstart of the electric grid, as power companies reportedly maintain only a limited number of replacement transformers, which can take up to six months to procure. Current supply chain issues could exacerbate recovery efforts. The conversation also raises concerns about the vulnerability of GPS and communication satellites, suggesting a return to traditional methods like the Pony Express. Additionally, questions are posed regarding the capabilities of existing observatories for early detection of CMEs, with concerns that detection gaps could significantly reduce warning times for potential impacts. The overall sentiment indicates that a prolonged loss of grid power would leave many unprepared for the ensuing challenges.
