temperature in the core of the sun?

Is it possible for there to be a sudden rise in temperature in the suns core? If so, is it something we should worry about?

5 Answers

  • 1 decade ago
    Favorite Answer

    In the standard solar model the core temperature is 15.7 million K. See for instance here: http://www.pas.rochester.edu/~emamajek/images/Sun_...

    The Sun is in so called hydrostatic equilibrium. This means that the "burning" of hydrogen in the core produces a counter pressure to the gravity that tries to make the Sun shrink. The gas cloud becomes a stable star.

    Now if the temperature would rise in the core, the outward pressure would win and make the core bigger. But an expanding volume means that temperature and pressure decrease. As a result the rate of nuclear fusion decreases, until a new equilibrium is established.

  • 5 years ago

    Solar energy is created deep within the core of the Sun. It is here that the temperature (15,000,000° C; 27,000,000° F) and pressure (340 billion times Earth's air pressure at sea level) is so intense that nuclear reactions take place. This reaction causes four protons or hydrogen nuclei to fuse together to form one alpha particle or helium nucleus. The alpha particle is about .7 percent less massive than the four protons. The difference in mass is expelled as energy and is carried to the surface of the Sun, through a process known as convection, where it is released as light and heat. Energy generated in the Sun's core takes a million years to reach its surface. Every second 700 million tons of hydrogen are converted into helium ashes. In the process 5 million tons of pure energy is released; therefore, as time goes on the Sun is becoming lighter.

  • 1 decade ago

    The chances of a sudden rise in the core temperature of a star in main sequence is very less.

  • 1 decade ago

    The chances of our sun having a rise in temperature that would effect it are very slim, the reactions inside of the sun would have to be sped up dramatically, and so would the pressure, so i would say we dont have to worry about it for a long time.

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  • Anonymous
    1 decade ago

    No, and no. At least, not until about 5 billion years from now when it runs out of 90% of its hydrogen fusion fuel and contracts in on itself. That will make it hotter. Should we worry about it now? No.

    The core of the Sun right now, all of us in the Solar System quite happen -- and for the next 5 billion years or so, is around 15,000,000° C (27,000,000° F).

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