After a period of relative quiet, larger sunspots have come into view.
Sunspots AR1817 and AR1818 pose a growing threat for M-class solar flares.
Already we have had some recent C-class solar flares. http://www.swpc.noaa.gov/rt_plots/xray_5m.html
To arcmode:
My husband likes to compare sunspots with volcanoes. Although the outside of the volcano may be cold, hot molten lava can burst through the dome or through vents as can be seen through videos of the most active Hawaiian volcano.
Magnetic solar filaments often leap from sunspots. These filaments often interact with filaments from other sunspots forming dramatic and brilliant arcs. There are some fascinating videos available online. Our electro-magnetic sun is fascinating. We are also electric magnet or we would not be alive.
Christ said that He is Light, and light is electro-magnetic with photons exhibiting both wave and particle properties.