The Death of our Solar System We have learned now that the sun is fueled by the

  • Pranabjyoti Das
The Death of our Solar System We have learned now that the sun is fueled by the fusion process of the hydrogen nuclei. But what happens when it depletes the supply of hydrogen at its core? · In about 5 billion years from now, the sun will diminish its supply of hydrogen, and will no longer be able to maintain its life-supporting process of nuclear fusion within its core. Once the hydrogen fuel is depleted the Sun will enter into Old Age, the stage in which it begins to die. · Due to its lack of thermal energy, the core of the sun will begin to condense, but its outermost layers of the sun will continue the hydrogen process outward and will expand at least three times its present size, eventually becoming a red giant. · During the following several million years, the sun will continue to expand even up to 100 times its present size, seriously warming Earth and killing any remaining life. · At this point, the sun’s core will have grown hot enough to begin another nuclear reaction— this time using Helium (a product of the hydrogen fusion process) as its fuel. · After approximately 100 million years of burning as a Helium star, the Sun will expand again, exerting a huge shell of gas which will continue to expand even past our solar system. · After 1 million years of this, the sun will have completely depleted all of its sources. Without the heat pressure of a nuclear fusion process, there will be nothing to stop a great gravitational collapse. · The sun will collapse in on itself and all that will remain of the sun is a white dwarf, or a hot, white-glowing object about the size of Earth with only about half of the sun’s original mass.

The Death of our Solar System We have learned now that the sun is fueled by the fusion process of the hydrogen nuclei. But what happens when it depletes the supply of hydrogen at its core? · In about 5 billion years from now, the sun will diminish its supply of hydrogen, and will no longer be able to maintain its life-supporting process of nuclear fusion within its core. Once the hydrogen fuel is depleted the Sun will enter into Old Age, the stage in which it begins to die. · Due to its lack of thermal energy, the core of the sun will begin to condense, but its outermost layers of the sun will continue the hydrogen process outward and will expand at least three times its present size, eventually becoming a red giant. · During the following several million years, the sun will continue to expand even up to 100 times its present size, seriously warming Earth and killing any remaining life. · At this point, the sun’s core will have grown hot enough to begin another nuclear reaction— this time using Helium (a product of the hydrogen fusion process) as its fuel. · After approximately 100 million years of burning as a Helium star, the Sun will expand again, exerting a huge shell of gas which will continue to expand even past our solar system. · After 1 million years of this, the sun will have completely depleted all of its sources. Without the heat pressure of a nuclear fusion process, there will be nothing to stop a great gravitational collapse. · The sun will collapse in on itself and all that will remain of the sun is a white dwarf, or a hot, white-glowing object about the size of Earth with only about half of the sun’s original mass.

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