Catherine Ryan Hyde on Nostr: Here's that active region that I showed you a couple of days ago. At the time it was ...

Here's that active region that I showed you a couple of days ago. At the time it was just barely rotating into view. Now it's Earth-facing, and a very large sunspot indeed. AR3878. It's produced three pretty strong flares (only one was an X, but another was just short of X) in less than two hours.