WIRED @WIRED
That’s what happened the day after Carrington saw the blinding beam. Electrical current raced through the sky over the western hemisphere. A typical bolt of lightning registers 30,000 amperes. This geomagnetic storm registered in the millions. 📸: Mark Pernice 7/14 https://t.co/k4a2q2gbV3 — PolitiTweet.org