Sunspot (noun)

A dark spot on the sun's surface, caused by a concentration of magnetic field that prevents convection and thus reduces temperature. They are often accompanied by flares and prominences.

Origin:

Late 17th century: from sun + spot.

Examples:

1. Scientists are studying the sunspots on the sun's surface to better understand solar flares.
2. The sun's sunspots are a result of intense magnetic activity.
3. Sunspots can be observed on the surface of the sun through telescopes.
4. The sunspots are caused by the concentration of magnetic field on the sun's surface.
5. Sunspots can be linked to solar flares, coronal mass ejections, and other solar activity.