* Core: The hottest part of the Sun, with temperatures reaching 15 million degrees Celsius (27 million degrees Fahrenheit). This is where nuclear fusion occurs.
* Radiative Zone: This region surrounding the core is still extremely hot, with temperatures around 5 million degrees Celsius (9 million degrees Fahrenheit). Energy from the core is transported outwards through radiation.
* Convective Zone: In this layer, energy is transported through convection, where hot gas rises and cooler gas sinks. Temperatures here are around 2 million degrees Celsius (3.6 million degrees Fahrenheit).
* Photosphere: This is the visible surface of the Sun, with a temperature of about 5,500 degrees Celsius (9,932 degrees Fahrenheit). Sunspots, cooler areas on the photosphere, have temperatures around 3,800 degrees Celsius (6,872 degrees Fahrenheit).
* Chromosphere: This layer above the photosphere is much hotter, with temperatures reaching 1 million degrees Celsius (1.8 million degrees Fahrenheit).
* Corona: The outermost layer of the Sun's atmosphere, the corona is incredibly hot, reaching 1 million to several million degrees Celsius (1.8 million to several million degrees Fahrenheit). The reason for this extreme temperature is still being researched.
So, the Sun's temperature ranges from around 3,800 degrees Celsius (6,872 degrees Fahrenheit) in sunspots to millions of degrees in its core and corona.