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Whose proposal explained why the Sun shines?
Quick Answer
Hans Bethe explained that the Sun shines because of nuclear fusion in its core. His work in 1938 identified the chain of reactions that power stars like the Sun.
The Full Story
In 1938, physicist Hans Bethe showed that the Sun’s energy comes from nuclear fusion rather than chemical burning. He described the proton-proton chain, in which hydrogen nuclei fuse to form helium and release enormous energy. This solved a long-standing problem about how stars could shine for billions of years. Bethe’s explanation became a cornerstone of modern stellar astrophysics.
Key Facts
1.Bethe’s paper appeared in 1938
2.The Sun is powered by hydrogen fusion
3.Fusion converts mass into energy
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Suggested video title for this topic:
"The scientist who figured out the Sun’s real fuel"
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