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Iron in Sun - recent study
April 9 , 2025
13 days
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- Iron (Fe) makes up about 0.14% of the Sun's mass, which is a very small fraction compared to hydrogen (~74%) and helium (~24%).
- Iron is found mostly in the Sun’s core and outer layers (photosphere, corona) in ionized forms.
- Iron in the Sun comes from nucleosynthesis in earlier generations of stars.
- Iron opacity affects temperature, density and fusion rates inside the Sun.
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