is it conceivable that much of the gas, particularly off jupiter will be blown off?

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Damien,
International Baccalaureate Physics teacher
Optics, Photogrammetry and Remote Sensing Instrumentation Major
Admin: Pacific Science and Art

Maybe, but not so sure about it, because most of the scientist think, Jupiter is huge and it can produce heat into space...2x of the heat.

My stupid calculation :
The sun when turn into White Dwarf...10,000 brightness of the normal sun, I don't count the temperature of the Sun's Core, but the surface. 6000 x 10,000 = 60,000,000 K....Jupiter's Distance from Sun its 5.2 AU = 78,000,000 Km
and Earth's distance from Sun is 1 AU = 15,000,000 km.

780mil - 600mil = 180mil

180mil (After WD), and 150mil (Earth's Distance form Sun), so compare to those 2 planet...Jupiter is in between Earth and Mars...which is about 1.2 AU from the White Dwarf....so Jupiter is safe..I guess

ummm can you clarify your equations???

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Damien,
International Baccalaureate Physics teacher
Optics, Photogrammetry and Remote Sensing Instrumentation Major
Admin: Pacific Science and Art

I don't think a 10000 fold increase in brightness corresponds to a 10000 fold increase in temperature at all. Nor does the 600000000 K have anything to do with distance.

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Climate Change Australia

i am getting further confused!!!! what will the solar system be like when the sun is a white dwarf

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Damien,
International Baccalaureate Physics teacher
Optics, Photogrammetry and Remote Sensing Instrumentation Major
Admin: Pacific Science and Art

Cold.

specifically....

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Damien,
International Baccalaureate Physics teacher
Optics, Photogrammetry and Remote Sensing Instrumentation Major
Admin: Pacific Science and Art

On the Hertzprung-Russell (HR) diagram white dwarfs are found on the low left part making them dim, hot stars. Their luminosity are from 1 to 10^-4 and their spectrral classes run from F to B. I agree with TheThorn, it will be cold and dark. Poor Titan, if it does manage to evolve life during the Red Giant stage, they will freeze to death.

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Insanity: doing the same thing over and over again and expecting different results.
Albert Einstein

darn!!!! so will mars exist?

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Damien,
International Baccalaureate Physics teacher
Optics, Photogrammetry and Remote Sensing Instrumentation Major
Admin: Pacific Science and Art

So, what do you have against Mars?

__________________
Insanity: doing the same thing over and over again and expecting different results.
Albert Einstein

no no no, i am hoping that mars does exist.....my avatar ought to give a hint

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Damien,
International Baccalaureate Physics teacher
Optics, Photogrammetry and Remote Sensing Instrumentation Major
Admin: Pacific Science and Art

Who know what might happen to Mars at that time , but one thing for sure, Mars will cover by the WD and u almost can't see it until it complete dark...can't see it anymore

a total martian-solar eclipse....hmmmmmmmm! what a sight that'd be

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Damien,
International Baccalaureate Physics teacher
Optics, Photogrammetry and Remote Sensing Instrumentation Major
Admin: Pacific Science and Art

Here is a great example of what our sun's future will be, January 11th APOD.

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Insanity: doing the same thing over and over again and expecting different results.
Albert Einstein

Nice image This is a white dwarf as well, I think someone already post it before White Dwarf Supernova

Our sun will not go supernova, assuming scientists' calculations are correct.

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Climate Change Australia

If the Big Bang is taken as the true beginning of the current configuration of the universe, has there been time for a sun-like star to evolve to a black dwarf?

Will each surviving planet continue to increase in mass such that Jupiter will attain stellar mass by the time the sun becomes black? Since the sun will continue to exceed Jupiter in mass, because its gravity well is larger and it will collect more mass from the interstellar medium than Jupiter, will it remain near the center of gravity of the system and invisibile though not a black hole in the usual sense?

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For those inclined to oppose human meddling with the structure of the universe or the composition and configuration of objects and groups of objects within the universe, consider:
Whether there is a limit to the magnitude of a modulation of chaos below which order remains invariant? Or, is order but a fiction invented by perspectives applied over finite, however large, time intervals?

Oops! Sorry about the double submittal

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For those inclined to oppose human meddling with the structure of the universe or the composition and configuration of objects and groups of objects within the universe, consider:
Whether there is a limit to the magnitude of a modulation of chaos below which order remains invariant? Or, is order but a fiction invented by perspectives applied over finite, however large, time intervals?

If the Big Bang is taken as the true beginning of the current configuration of the universe, has there been time for a sun-like star to evolve to a black dwarf?

That's a very good question. I think the answer is no. It takes a long time for a white dwarf to form in the first place, and then another long time for it to cool off. Another part of the problem is at what point is this cooling star "black"?

From http://physics.weber.edu/palen/Phsx1030/Le...ures/Lwdns.html

A 0.6 MSun star will:

* drop to a luminosity of 0.1 LSun in 20 million yrs.
* drop to a luminosity of 0.01 LSun in 300 million yrs.
* drop to a luminosity of 0.001 LSun in 1 billion yrs.
* drop to a luminosity of 0.0001 LSun in 6 billion yrs.

i.e. a white dwarf with .6 of the mass of the sun will take 6 billion years to cool to the point that it has .0001 times the light output of the sun. But at that point it's surface temperature has only drpped back to the same as the sun's (it's just so small that it isn't very bright). I'd hardly call something as hot as the sun "black". More "yellow". And since the cooling process slows as the temperature decreases, it's going to take even longer to get to "black" whatever temperature you choose for that.

Yet to even get to the white dwarf stage, a star that small would take a long time. If we assume that it started life the size of the sun, and lost 40% of it's mass in the red giant / planetary nebula phase, it would have taken it about 10 billion years before it became a white dwarf of .6 Msun. Another 6 billion years to get back to yellow, and we're already past the best current estimates of the age of the universe according to the big bang theory.

Bigger stars get to the white dwarf stage faster, but cool more slowly, because they are physically smaller (sounds wrong, but that's the way it is).

As for your second question, I doubt that any of the planets are accreting matter anywhere near the rate needed to become stars. And that planetary nebula phase could be quite disruptive. The inner planets won't survive the red giant phase. If Jupiter survives the planetary nebula phase (IMHO, it is likely that at least its core will survive) then it will eventually cool to the background temperature of the universe (currently 3 degrees K).

Which brings me back to my previous post.

Cold.

Writting Notes........another question, so small stars get to the white dwarf stage slower, but cool more faster? As I know, bigger star has more luminosity, and they cool down really quick after the explosion, so small stars has lower luminosity, and they cool down really slow...Does Size of the stars has something to do with the luminosity?

Luminosity is a function of temperature and physical size. Massive main sequence stars are both bigger and hotter than less massive stars, so they are very bright. They burn their fuel quicker so their lives are shorter, and they get to the white dwarf stage sooner (assuming they're not too big).

But in the white dwarf stage that changes. I'm not sure whether the initial temperature of a white dwarf depends on mass, but its size certainly does, but backwards. More massive white dwarfs are smaller.

From that link I posted earlier:

They are made mainly of electron-degenerate matter, which means that the pressure does not respond to an increase in temperature in the usual way. This causes white dwarfs to have the odd property that if their mass increases their radius decreases.

* a 0.5 MSun white dwarf has a radius of 1.5 REarth
* a 1.0 MSun white dwarf has a radius of 0.9 REarth
* a 1.3MSun white dwarf has a radius of 0.4 REarth

Since the surface area of a sphere varies with the square of the radius, the 0.5Msun white dwarf would have a surface area 14 times bigger than the 1.3Msun white dwarf, making it 14 times more luminous at the same temperature, radiating 14 times as much energy. And since it only has 38 percent of the mass, it would be cooling about 14/.38 = 37 times as fast.

Like I said, the massive stars get to that stage quicker, but cool more slowly.