![A wide and vigorous active region group (AR11121 and AR11123) produced several flares as SDO observed in 171 angstrom extreme ultraviolet light (Nov. 11-12, 2010).](https://www.thesuntoday.org/wp-content/uploads/2010/11/flaring171-closeup-1174x480.jpg)
A wide and vigorous active region group (AR11121 and AR11123) produced several flares as SDO observed in 171 angstrom extreme ultraviolet light (Nov. 11-12, 2010).
![Sunspot complex composed of active regions, AR11121 and AR11123, observed in the 171 angstrom channel of SDO/AIA.](https://www.thesuntoday.org/wp-content/uploads/2010/11/flaring171.png)
Sunspot complex composed of active regions, AR11121 and AR11123, observed in the 171 angstrom channel of SDO/AIA.
The tangle of magnetic field lines, made visible by particles spinning along them, connected and reconnected several times. Since the active region is facing towards Earth, it may produce geo-effective events in upcoming days.
(credit: Steele Hill and SDO)