
Sunspot Region AR 3697 Returns with a Bang, Unleashing Powerful X-Class Flares
The sunspot region responsible for the glorious auroras that shimmered over most of Earth in early May is back, and it's still engaging in shenanigans. Known previously as AR 3664, this region was behind several X-class flares, including the most powerful of the current solar cycle. After rotating away from view onto the far side of the Sun in the middle of May, it re-emerged in style with a brand new name – AR 3697.
On May 27, AR 3697 erupted with another powerful X-class flare, this time an X 2.8. Since then, it has continued its activity, producing four more X-class flares, bringing the total to five as of the latest reports.
The sequence of events began on May 29 with an X1.45 flare, followed by an X1.1 flare on May 31. On June 1, AR 3697 unleashed two more flares, an X1.03 and a...