Earth-orbiting satellites have just detected an X2-class solar flare. The source is huge sunspot AR1339 measuring some 40,000 km wide and at least twice that in length, the sprawling sunspot group is an easy target for backyard solar telescopes. Two or three of the sunspot’s dark cores are wider than Earth itself.
The x-class solar flare launched a CME (coronal mass ejection) into space. The CME is not heading our way. Many scientists will be watching this sunspot as the CMEs could have greater effect as AR1339 turns toward Earth in the next few days.