May's Sunspot That Triggered Massive Solar Storm Returns
The sunspot that triggered the massive solar storm that lit up Earth's skies with auroras in May returned.
Now called AR3723 (originally AR3664, then AR3697). It blasted a M9-class solar flare end of last month.
Credit: NASA / SDO and the AIA, EVE, and HMI science teams / HelioViewer - edited by: Steve Spaleta
Now called AR3723 (originally AR3664, then AR3697). It blasted a M9-class solar flare end of last month.
Credit: NASA / SDO and the AIA, EVE, and HMI science teams / HelioViewer - edited by: Steve Spaleta