After the Material in the Core of a Massive Star

question 189

Multiple Choice

After the material in the core of a massive star has been converted to iron by thermonuclear reactions, further energy can be released to heat the core only by

• A) gravitational contraction.
• B) nuclear fission, or splitting of nuclei.
• C) the absorption of neutrinos.
• D) thermonuclear fusion of iron into heavier elements.

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