Solar Activity is a term used to describe the activity of the sun, such as sunspots. Sunspots are dark spots on the surface of the sun that are caused by intense magnetic activity. They are associated with solar flares, which are powerful bursts of radiation released from the sun's surface. Sunspots can last for days or weeks and can be seen with the naked eye. Solar Activity also includes other phenomena such as coronal mass ejections, which are large clouds of charged particles released from the sun's atmosphere.