Solar system

The Sun’s Core Temperature

The temperature at the core of the Sun is incredibly high, reaching about 15 million degrees Celsius (27 million degrees Fahrenheit). This extreme heat is generated by the intense pressure and fusion reactions occurring within the Sun’s core.

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The core of the Sun, where nuclear fusion reactions take place, is the hottest part of the Sun. The temperature in this region is so high that it causes hydrogen atoms to fuse together, creating helium and releasing a tremendous amount of energy in the process. This process, known as nuclear fusion, is what powers the Sun and enables it to emit heat and light.

The temperature at the core of the Sun is estimated to be around 15 million degrees Celsius (27 million degrees Fahrenheit). This high temperature is essential for sustaining the fusion reactions that continuously occur in the Sun’s core. The energy produced from these reactions is what ultimately powers the Sun and allows it to emit heat and light into space.

The Sun’s core is not the only hot part of the Sun. Surrounding the core is the radiative zone, where energy generated in the core gradually moves outward through radiation. The temperature in the radiative zone decreases with distance from the core but is still extremely high, reaching up to about 7 million degrees Celsius (12.6 million degrees Fahrenheit).

Above the radiative zone is the convective zone, where energy is transported through the movement of hot plasma. This region has a lower temperature compared to the core and radiative zone, ranging from about 2 million to 7 million degrees Celsius (3.6 million to 12.6 million degrees Fahrenheit).

The Sun’s surface, known as the photosphere, is cooler than its interior regions. The temperature of the photosphere is approximately 5,500 degrees Celsius (9,932 degrees Fahrenheit). This is the temperature that we typically associate with the surface of the Sun when we observe it from Earth.

Overall, the Sun’s temperature varies significantly across its different layers, with the core being the hottest region due to the intense nuclear fusion reactions that occur there.

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