One of the largest sunspots we have seen in years rotated around the limb this weekend. Measuring more than 100,000km in size this active region is a solar giant, and can be seen in the picture with it's complex 'beta-gamma' magnetic field crackling with micro-flare activity. NASA is forecasting a 70% chance of M-Class flares from it over the coming days, and as rotates to be Earth facing there is a real chance of possible auroral activity. One to keep an eye on!