Final answer:
The Sun produces light and heat through nuclear fusion of hydrogen into helium, releasing energy in the process.
Explanation:
The Sun produces its light and heat through the process of nuclear fusion, primarily involving hydrogen nuclei converting into helium nuclei. This fusion reaction releases a significant amount of energy, which is emitted as waves in all directions. The energy released is a result of the lost mass being converted into energy, as given by the formula E = mc².
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