The Sun is not made up of "parts" in the way that we think of a planet or a car. It's a giant ball of hot gas, but it does have distinct layers with different properties. Here are the three main layers of the Sun:

1. Core: This is the innermost part of the Sun, where nuclear fusion takes place. It's incredibly dense and hot, with temperatures reaching 15 million degrees Celsius (27 million degrees Fahrenheit). This is where hydrogen atoms fuse together to form helium, releasing massive amounts of energy in the process. This energy is what powers the Sun and ultimately provides light and warmth to Earth.

2. Radiative Zone: Surrounding the core, this layer is where energy from the core travels outward through radiation. Imagine photons of light bouncing around, slowly making their way through this dense layer. This takes hundreds of thousands of years!

3. Convective Zone: In this outer layer, the energy is transported by convection, like boiling water. Hotter material rises and cooler material sinks in a constant cycle. Think of the bubbling you see in a pot of boiling water. This process ultimately brings the energy to the Sun's surface.

The Sun's outer layer, known as the photosphere, is what we see as the Sun's surface.

While not a distinct layer, the corona, the Sun's outermost atmosphere, extends far beyond the photosphere and can be seen during a total solar eclipse.