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Active Region AR2192 continues to be impressive. By now the largest sunspot in this solar cycle, this active region produced seven M-class solar flares and one X-class solar flare. And since the X1.1-class solar flare from Saturday, October 19, 2014, thi

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Active Region AR2192 continues to be impressive. By now the largest sunspot in this solar cycle, this active region produced seven M-class solar flares and one X-class solar flare. And since the X1.1-class solar flare from Saturday, October 19, 2014, this region has doubled in size. Here is a look at the development of this region as it started to rotated over the eastern limb of the Sun and into our view here. This is from the data from my HMI instrument. It is designed to study oscillations and the magnetic field at the solar surface, or photosphere. HMI is one of three instruments on board. HMI observes the full solar disk at 6173 angstroms. Credit: NASA Solar Dynamics Observatory (Little SDO)