[영문리포트][과학] 태양의 미래와 인간의 미래에 대한 탐구 (원제: What will happen to our sun and what will this mean for humans)
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- 2008.11.30
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what will happen to our sun and what will this mean for humans. 이 리포트는 제가 9학년 1/4정도가 지났을 즈음하여 쓴 리포트로, 등록일로부터 몇주 안 지났을 때 쓴 리포트입니다. 태양에게 무슨일이 일어날 것인지, 그것이 인간에게 끼치는 영향은 무엇인지... 에 대한 리포트입니다.
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From the time humans appeared for the first time, humans had lived depending on the Sun. People get the light and heat from the Sun, and they respected the Sun as the god. However, as the science developed, people started to forget about the importance of the Sun. And some people started to think that humans could live even without the Sun. But is it? What will happen to our Sun and what will this mean for humans?
Currently, the Sun is a middle age star. It had lived for four and an half billion years, and it is now the state of a yellow dwarf. As everything needs energy for living, the Sun needs hydrogen for its energy. The Sun converts the hydrogen into helium through nuclear fusion, and it is the way the Sun gets its energy. And the Sun is still possessing 5-billion-year supply of hydrogen for burning, and what it means is that after five billion years, the Sun would die.
When it burns all the hydrogen it possessed, it changes its fuel as helium. As it uses helium for the nuclear fusion, the Sun would get bigger and the surface temperature would decrease. And it would become to a red giant which means that it is passing the last ten percent of its lifetime and the diameter of the Sun would extend well beyond the Earth. After that, the Sun would slowly become to a white dwarf and then into a black dwarf again.
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