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What makes the Sun shine?
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The Sun shines because it gives out light and heat, which are forms of energy. The energy is made by nuclear reactions in the Sun's core. Extreme temperatures and pressure at the core make hydrogen atoms join together to form helium atoms. This process is called nuclear fusion, and it creates huge amounts of energy. It can take a million years for the energy produced in the core to reach the surface. | | At the Sun's core, the nuclei of atoms join together, releasing huge amounts of energy. |
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Previous:
Back
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Book:
1001
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Section:
Space
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Chapter:
Stars
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