What powers the Sun and other stars?

Fusion of hydrogen into helium.

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  1. Fusion of hydrogen into helium ✔
  2. Fission of uranium in the core
  3. Burning of carbon with oxygen

Why: Stars like the Sun are powered by fusion of protons into helium, releasing enormous energy.

Huh, didn't know that: Stars like the Sun are powered by fusion of protons into helium, releasing enormous energy.

The dad joke
The Sun is a fusion powerhouse, not a campfire.
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References

Answer: Fusion of hydrogen into helium. Stars like the Sun are powered by fusion of protons into helium, releasing enormous energy.

  1. Nuclear physics en.wikipedia.org/wiki/Nuclear_physics
    Stars like the Sun are powered by the fusion of four protons into a helium nucleus
    Checked 2026-11-07.

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