SOLAR SYSTEM

Detailed explanation-1: -As we all know, the photosphere is the visible surface of the sun. It is the first layer of the sun. It is the outer layer of the sun that is present outside of the core. Because of this, it is the coldest layer of the sun.

Detailed explanation-2: -The Photosphere is Cooler Than the Layers Around It It is only about 500 km (300 miles) wide, a much thinner layer than the interior solar regions. The temperature of the photosphere is around 5, 500 °C (9, 900 °F), which is much cooler than the Sun’s core.

Detailed explanation-3: -Photosphere-The photosphere is the deepest layer of the Sun that we can observe directly. It reaches from the surface visible at the center of the solar disk to about 250 miles (400 km) above that.

Detailed explanation-4: -The temperature of the sun varies from around 27 million degrees Fahrenheit (15 million degrees Celsius) at the core to only about 10, 000 degrees F (5, 500 degrees C) at the surface, according to NASA (opens in new tab).

Detailed explanation-5: -Located between about 50 and 80 kilometers (31 and 50 miles) above Earth’s surface, the mesosphere gets progressively colder with altitude. In fact, the top of this layer is the coldest place found within the Earth system, with an average temperature of about minus 85 degrees Celsius (minus 120 degrees Fahrenheit).