* Hydrogen (H): About 70.6% of the Sun's mass
* Helium (He): About 27.4% of the Sun's mass
Other elements present in trace amounts:
* Oxygen (O)
* Carbon (C)
* Neon (Ne)
* Iron (Fe)
* Silicon (Si)
* Magnesium (Mg)
* Sulfur (S)
* Nickel (Ni)
* Calcium (Ca)
These trace elements make up less than 2% of the Sun's mass.
The Sun's Energy Source:
The Sun's energy comes from nuclear fusion reactions in its core. Here, hydrogen atoms are fused together to create helium, releasing a tremendous amount of energy in the process. This process is constantly ongoing, supplying the Sun with its immense power.