Question:

How long until the sun stops burning?

by Guest60968  |  earlier

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Do you think humanity would be able to adapt?

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  1. Actually, the sun is created in a way that it will never stop burning. Try reading revelations in your bible to find out


  2. oh just a cople FIVE BILLON YEARS .

  3. 4 to 6 billion years. It runs out of hydrogen in 4 billion years. It expands to a red giant. Then it starts burning other elements and in about 6 billion years has changed to a white dwarf and just fades away.

    apadt? it will stop in 5 billion years but unless we find another galazy to live in there will be no adapting but alot of dieing,glad ill be died

    All life on the surface of earth will likely be dead in about one billion years. I suspect seriously we will be long gone. The sun enters its red giant stage in about 5 billion years. It stops "burning" in about 7 or 8 billion years. Then the sun will start throwing off layers in a series of cataclysmic events that come before the final collapse into a dead white dwarf. Even if some remnant of human population still inhabited the outer reaches of the solar system at the beginning of that process, it would not at the end.

    about 5 billion years, and no, when the sun dies, any and all life here will die as well, well actually it'll be dead long before the sun actually 'goes out' but if by some miracle something did survive, when it did go out, everything in the solar system no matter where would die.

  4. The Sun becomes a Red Giant, with a radius that comes out to the Earth's orbit, then shrinks to a White Dwarf - about the size of the Earth, in 4 to 6 billion years.  It is getting hotter as it ages.  Some people think we have less than a billion years before it gets too hot on Earth.

    However, the Earth can be saved.  We can do it.  What we do is get a big asteroid, and put it into a funky figure 8 orbit between the Earth and Jupiter.  We steal some orbital energy from Jupiter and give it to the Earth.  The Earth's orbit expands to become farther from the Sun.  Careful not to let the nice asteroid touch the Earth - that makes for a bad day!  But calculations suggest that we have the time to make it happen.  We'll likely need technology we don't currently have to make it work completely.  But none of the problems are that hard to solve.  For example, we don't need new physics.

    And, after the Red Giant shrinks, we can reverse the process and move the Earth closer.  We might get trillions of years out of the Earth this way.  I can hardly wait.

  5. The Sun is a yellow, G2 V main sequence dwarf. Yellow dwarfs live

    about 10 billion years (from zero-age main sequence to white dwarf

    formation), and our Sun is already about 5 billion years old.

    Main sequence stars (like our Sun) are those that fuse hydrogen into

    helium, though the exact reactions vary depending on the mass of the

    star. The main sequence phase is by far the most stable and

    long-lived portion of a star's lifetime; the remainder of a star's

    evolution is almost an afterthought, even though the results of that

    evolution are what are most visible in the night sky. As the Sun

    ages, it will increase steadily in luminosity. In approximately 5

    billion years, when the hydrogen in the Sun's core is mostly

    exhausted, the core will collapse---and, consequently, its temperature

    will rise---until the Sun begins fusion helium into carbon. Because

    the helium fuel source will release more energy than hydrogen, the

    Sun's outer layers will swell, as well as leaking away some of its

    outer atmosphere to space. When the conversion to the new fuel source

    is complete, the Sun will be slightly decreased in mass, as well as

    extending out to the current orbit of Earth or Mars (both of which

    will then be somewhat further out due to the Sun's slightly decreased

    mass). Since the Sun's fuel source will not have increased in

    proportion to its size, the blackbody power law indicates that the

    surface of the Sun will be cooler than it is now, and will become a

    cool, deep red. The Sun will have become a red giant.

    A few tens or hundreds of millions of years after the Sun enters its

    red giant phase (or "helium main sequence"; the traditional main

    sequence is occasionally referred to as the hydrogen main sequence to

    contrast the other main sequences that a massive star enters), the Sun

    will begin to exhaust its fuel supply of helium. As before, when the

    Sun left the (hydrogen) main sequence, the core will contract, which

    will correspondingly lead to an increase in temperature in the core.

    For very massive stars, this second core collapse would lead to a

    carbon main sequence, where carbon would fuse into even heavier

    elements, such as oxygen and nitrogen. However, the Sun is not

    massive enough to support the fusion of carbon; instead of finding

    newer fuel sources, the Sun's core will collapse until degenerate

    electrons---electrons which are in such a compressed state that their

    freedom of movement is quantum mechanically restricted---smashed

    together in the incredible pressures of the gravitational collapse,

    will halt the core's collapse. Due to the energy radiated away during

    the process process of the formation of this electron-degenerate core,

    the atmosphere of the Sun will be blown away into space, forming what

    astronomers call a planetary nebula (named such because it resembles a

    planetary disk in the telescope, not because it necessarily has

    anything to do with planets). The resulting dense, degenerate core is

    called a white dwarf, with a mass of something like the Sun compressed

    into a volume about that of the Earth's.

    White dwarfs are initially extremely hot. But since the white dwarf

    is supported by degenerate electrons, and has no nuclear fuel to speak

    of to create more heat, they have no alternative but to cool. Once

    the white dwarf has cooled sufficiently---a process which will take

    many billions of years---it is called an exhausted white dwarf, or a

    black dwarf.

  6. apadt? it will stop in 5 billion years but unless we find another galazy to live in there will be no adapting but alot of dieing,glad ill be died

  7. about 5 billion years, and no, when the sun dies, any and all life here will die as well, well actually it'll be dead long before the sun actually 'goes out' but if by some miracle something did survive, when it did go out, everything in the solar system no matter where would die.

  8. The Sun has never started BURNING.!

  9. 4 to 6 billion years.  It runs out of hydrogen in 4 billion years.  It expands to a red giant.  Then it starts burning other elements and in about 6 billion years has changed to a white dwarf and just fades away.

  10. All life on the surface of earth will likely be dead in about one billion years.  I suspect seriously we will be long gone.  The sun enters its red giant stage in about 5 billion years.  It stops "burning" in about 7 or 8 billion years.  Then the sun will start throwing off layers in a series of cataclysmic events that come before the final collapse into a dead white dwarf.   Even if some remnant of human population still inhabited the outer reaches of the solar system at the beginning of that process, it would not at the end.

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