Question

What is the name for the cooler, darker areas on the sun’s surface?

Answer 1

sunspots

The most noticeable magnetic activity of the Sun is the appearance of sunspots. Sunspots are cooler, darker areas on the Suns surface   Figure below  . Sunspots occur in an 11 year cycle. The number of sunspots begins at a minimum. The number gradually increases to the maximum. Then the number returns to a minimum again.