SOLAR SYSTEM

Detailed explanation-1: -Why are sunspots relatively cool? It’s because they form at areas where magnetic fields are particularly strong. These magnetic fields are so strong that they keep some of the heat within the Sun from reaching the surface.

Detailed explanation-2: -The sunspots appear relatively dark because the surrounding surface of the Sun (the photosphere) is about 10, 000 degrees F., while the umbra is about 6, 300 degrees F. Sunspots are quite large as an average size is about the same size as the Earth.

Detailed explanation-3: -The surface of the Sun that we see is called the photosphere. The dark patches on the surface are called sunspots and are cooler than the rest of the surface. Whilst the photosphere has a temperature of around 6000 °C, sunspots are between 3000 °C and 4000 °C.

Detailed explanation-4: -Solar measurements reveal that the average surface temperature of the sun is 6000° Celsius and that sunspots are about 1500° Celsius cooler than the area surrounding them (still very hot), and can last anywhere from a few hours to a few months.