https://www.astronomerstelegram.org The Sun, from The Astronomer's Telegram en-us https://www.astronomerstelegram.org/?read=17763 Costantino Sigismondi Costantino Sigismondi sigismondi@icra.it Credentialed by: Costantino Sigismondi (sigismondi@icra.it) The Astronomer's Telegram ATel17763 The active region AR 14419 is a medium size beta-gamma-delta region, at the end of its presence on the solar hemisphere visible from Earth. Its evolution from C-class towards M-class and X-flaring occurred rapidly from 23 April, topping on 24 April with two X2.5 flares, separated by 7 hours. ... 2026-04-24T14:14:32-00:00