The approximate temperature of the Sun’s core is around 15 million degrees Celsius (27 million degrees Fahrenheit).
This extreme temperature is the result of the immense gravitational pressure that compacts the core’s hydrogen gas, causing a process known as nuclear fusion. In these intense conditions, hydrogen nuclei combine to form helium, releasing a tremendous amount of energy in the process. This energy is what fuels the Sun and allows it to shine bright in our sky.
As we move outward from the core to the outer layers of the Sun, such as the radiative zone and the convection zone, the temperature gradually decreases. Nevertheless, the core remains the hottest part, and its high temperatures are crucial for the Sun’s function as a star in our solar system.