To us, viewed with the naked eye, the Sun is unchanging. Sure, it’s higher or lower in the sky or obscured by clouds, smoke or haze. But, the Sun’s the Sun.
Once you start looking at the Sun more closely, and using instruments that can see beyond the glare of its overwhelming brightness, you see that the Sun rotates on its access. It’s surface is not homogeneous, but often contains disturbances or storms. This solar activity goes through 11 year cycles.
Though we’re past a maximum in the solar cycle, the surface of the Sun currently hosts an immense ‘sunspot.’ Sky and Telescope characterized it this way: