Sunspots on Sept. 5, 2017
Two large sunspot groups were visible on Tuesday (Sept. 5).
Busy Star
On September 4, 2017, the SDO captured an M5.5 class solar flare in 131 angstrom wavelength.
Closing In
The flaring region swirls and twists in this animation of the M5.5 class solar flare that occurred on Sept. 4, 2017.