The full evolution of today’s mesmerising #SolarFlare, which continued for over 12 hours! This is a very long duration event, as most flares are over well within an hour of onset. Just look at those flare loops grow! Awe-some stuff. #spaceweather #astronomy pic.twitter.com/URwwZNfm5S

— Dr. Ryan French (@RyanJFrench) September 2, 2024