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Name: rita wright
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Date: 1993 - 1999


Question:
The sun is supposed to be a round dense mass and be hot. If it is out of Hydrogen fuel then what is making it so hot?


Replies:
The sun will eventually run out of hydrogen and helium (in billions of years) and turn into a red giant, engulfing the inner planets including the earth. The sun's energy comes from nuclear fusion of hydrogen and helium into heavier elements.

John (e-mail hawley)



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