APOD 2.6

Sunspots that are visible to the naked eye? Yes, it is true. On January 5th in the Swiss skies during a sunset, viewers were able to see massive sunspots. This solar active region produced a substantial solar flare and a coronal mass ejection (CME), which was forecasted to reach Earth yesterday. This CME caused geomagnetic storms and aurora near Earth's poles. I selected this APOD because we are discussing the Sun in class now and there could not be a better photo.