| How does the energy created by nuclear fusion reach the Earth? |
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 | How does the energy created by nuclear fusion reach the Earth? | |
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| Nuclear fusion of hydrogen to form helium occurs naturally in the sun and other stars. It takes place only at extremely high temperatures. | |
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| What types of energy created by the sun reach the Earth? |
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| What types of energy created by the sun reach the Earth? | |
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| While the sun does emit ultraviolet radiation, the majority of solar energy comes in the form of "light" and "heat," in the visible and infrared regions of the electromagnetic spectrum. | |
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