Phenomenal
Hi guys,

I am new here and wanted to know how much power does a star have and how much power does it take to destroy a star?

1. Can an energy ourput equal to planet destroying destroy a star?

Thanks
tlocity
A star has power equal to the mass of the star E=MC^2
tlocity
A star has power equal to the mass of the star E=MC^2

BTW stars are destroying themselves.
einstienear
QUOTE (tlocity+Dec 30 2007, 08:47 PM)
A star has power equal to the mass of the star E=MC^2

what tlocity is trying to say, is that matter , has infinity energy in them, in fact, the atomic bomb proves me correct

E=mc2 is what einstien came up with, and he was a contribution to the atomic bomb (so was bohr, but he despised it in the end)

the amount of energy of a sun is its weight times the speed of light squared, wich is practicly ALOT!!!

so ANYTHING, has ALOT of energy

INCLUDING barralium atoms, wich is what they used for the atomic bomb

cheers
einstienear
Phenomenal
Thanks guys!

So how much power does it take to VAPORIZE planet EARTH and the MOON?!!
Is vaporizing a planet (Earth/Moon) as powerful as an ENTIRE Star???
brupen
I believe the correct question would be "How much energy does a star have". Power is the rate of energy consumption or production.

Our sun has enough energy to vaporize the earth and many more planets with it. I believe the sun could contain 100,000 earths. Could be wrong on that one, but the number is huge.
brupen
Holy smoke, the sun could contain 1.3 million earths!! Just googled it.
meBigGuy
Top ten ways to actually destroy earth

http://www.livescience.com/technology/dest...earth_mp-1.html

QUOTE
This method involves detonating a bomb so big that it blasts the Earth to pieces.

How hard is that?

The gravitational binding energy of a planet of mass M and radius R is - if you do the lengthy calculations - given by the formula E=(3/5)GM^2/R. For Earth, that works out to roughly 224,000,000,000,000,000,000,000,000,000,000 Joules. The Sun takes nearly a WEEK to output that much energy. Think about THAT.

To liberate that much energy requires the complete annihilation of around 2,500,000,000,000 tonnes of antimatter.
Phenomenal
QUOTE (meBigGuy+Jan 1 2008, 10:30 AM)
Top ten ways to actually destroy earth

http://www.livescience.com/technology/dest...earth_mp-1.html

QUOTE
This method involves detonating a bomb so big that it blasts the Earth to pieces.

How hard is that?

The gravitational binding energy of a planet of mass M and radius R is - if you do the lengthy calculations - given by the formula E=(3/5)GM^2/R. For Earth, that works out to roughly 224,000,000,000,000,000,000,000,000,000,000 Joules. The Sun takes nearly a WEEK to output that much energy. Think about THAT.

To liberate that much energy requires the complete annihilation of around 2,500,000,000,000 tonnes of antimatter.

So does that mean the energy able to to destroy Earth is as much as a Star?

How much energy does it take to VAPORIZE the Moon and Earth?
Is the energy to VAPORIZE Earth equal to a star?

HAPPPY NEW YEAR AND THANKS EVERYBODY!!!
Noumenon
The sun has much more energy than is required to just to vaporize the earth. In several billion years hence, once the sun already consumes most of its hydrogen through through the nuclear fusion cycle, it will become a red giant, and expand due to a 10 fold increase in core temperature caused by gravitational collapse. It will then reach and vaporize the earth, ...having already exhausted itself radiating vast amounts of energy for billions of years.
TemporalFugue
QUOTE
INCLUDING barralium atoms, wich is what they used for the atomic bomb

Atomic bombs actually use uranium or plutonium as fuel. Hydrogen bombs add
tritium, deuterium, or lithium deuteride.

Barralium is not an element. I (and Google) have never heard of it. Did
you mean barium? Or are you just inventing gibberish?
Guest00
QUOTE (TemporalFugue+Jan 1 2008, 09:18 PM)

Atomic bombs actually use uranium or plutonium as fuel.  Hydrogen bombs add
tritium, deuterium, or lithium deuteride.

Barralium is not an element.  I (and Google) have never heard of it.  Did
you mean barium?  Or are you just inventing gibberish?

I think Einstienear meant beryllium , not barium. Barium is a possible product of a nuclear reaction (explosion), whereas beryllium is/can be used in the construction of atomic weapons.

Here is a link to info on the Sun, Sun Info, complete with pretty pictures and numbers.

QUOTE

what tlocity is trying to say, is that matter , has infinity energy in them, in fact, the atomic bomb proves me correct

Infinity is a concept, not a number.
E = m*c^2 is a simple equation, and has its use for computing energy under ideal circumstances, by which I mean that if I were to convert the total mass of something, it'd give me pure energy (energy is equal to the product of mass and the square of light). In reality, fusion and fission are not 100% efficient. If memory serves, I remember a professor telling me that fission's efficiency was about 5% at max and fusion's efficiency was about 40% at max-- don't quote me for verbatim as I'm not completely sure. Here's a quote from the site I link to above to prove my claim:
QUOTE (->
 QUOTE what tlocity is trying to say, is that matter , has infinity energy in them, in fact, the atomic bomb proves me correct

Infinity is a concept, not a number.
E = m*c^2 is a simple equation, and has its use for computing energy under ideal circumstances, by which I mean that if I were to convert the total mass of something, it'd give me pure energy (energy is equal to the product of mass and the square of light). In reality, fusion and fission are not 100% efficient. If memory serves, I remember a professor telling me that fission's efficiency was about 5% at max and fusion's efficiency was about 40% at max-- don't quote me for verbatim as I'm not completely sure. Here's a quote from the site I link to above to prove my claim:

nuclear fusion
a nuclear process whereby several small nuclei are combined to make a larger one whose mass is slightly smaller than the sum of the small ones. The difference in mass is converted to energy by Einstein's famous equivalence E=mc2. This is the source of the Sun's energy therefore ultimately of (almost) all energy on Earth.
barakn
QUOTE (Noumenon+Jan 1 2008, 07:42 PM)
In several billion years hence, once the sun already consumes most of its hydrogen through through the nuclear fusion cycle, it will become a red giant, and expand due to a 10 fold increase in core temperature caused by gravitational collapse. It will then reach and vaporize the earth, ....

Recent work has shown that the sun will loose mass during the process, it's gravitational field will weaken, and the Earth's orbit will increase in size. The Earth will survive, though it will be burnt to a crisp.
Phenomenal
So what if something (Deathstar from Star Wars) has the power to VAPORIZE (not destroy, VAPORIZE) the Moon or the Earth, does that object have a power supply equal to an entire star??
Phenomenal
Sorry to bump but what how much damage would a power supply equal to an entire star cause?
Guest00
QUOTE (Phenomenal+Jan 3 2008, 07:17 PM)
Sorry to bump but what how much damage would a power supply equal to an entire star cause?

That depends on the efficiency of the weapon and the size of the star.
Quantum_Conundrum
QUOTE (Phenomenal+Jan 2 2008, 12:37 AM)
So what if something (Deathstar from Star Wars) has the power to VAPORIZE (not destroy, VAPORIZE) the Moon or the Earth, does that object have a power supply equal to an entire star??

Even if you vaporized the earth it would not destroy it. The gravity would keep most of the mass from escaping the general volume of space, and once it cooled down over time, it would be right back roughly the same as it is now(minus life). Even a planetary scale explosion like in Star Wars would not "destroy" a planet. Some few chunks of rock might escape if they came out at just the right angle and velocity, but over all, Alderaan would mostly just pull itself back together, not disappear in a shower of sparks and meteors. The amount of energy needed to create an explosion of that magnitude is more than could be contained in a death star sized space station. In order to totally anihilate the earth like the Death Star destroys planets in the movie, you would need a mass of anti-matter the size of the earth itself. I don't remember the lore from the movie and games exactly, but the Death Star is "only" a few dozen kilometers in radius (Vader's Super Star Destroyer is something like 10 kilometers in length).

The point is, no man made weapon could ever destroy a planet, and the amount of energy needed to destroy a star, such as Kip Duron does in one of the Star Wars novels, is so much greater that its really just pure fantasy. No missle could ever do it. Nothing you could possibly imagine that would ever be remotely buildable by man would even make a "dent" in a star.
Noumenon
QUOTE (Phenomenon+)
Sorry to bump but what how much damage would a power supply equal to an entire star cause?

I'm not really sure what’s being asked. It would depend on the method used to destroy the earth. For comparison,...

The largest fusion bomb ever detonated on earth generated 209 billion million joules (2.09E+17) of energy.

The sun has been generating internally 386 billion billion million joules every second for billions of years (3.86E+26 j/sec)
Phenomenal
QUOTE (Quantum_Conundrum+Jan 3 2008, 08:34 PM)
Even if you vaporized the earth it would not destroy it. The gravity would keep most of the mass from escaping the general volume of space, and once it cooled down over time, it would be right back roughly the same as it is now(minus life). Even a planetary scale explosion like in Star Wars would not "destroy" a planet. Some few chunks of rock might escape if they came out at just the right angle and velocity, but over all, Alderaan would mostly just pull itself back together, not disappear in a shower of sparks and meteors. The amount of energy needed to create an explosion of that magnitude is more than could be contained in a death star sized space station. In order to totally anihilate the earth like the Death Star destroys planets in the movie, you would need a mass of anti-matter the size of the earth itself. I don't remember the lore from the movie and games exactly, but the Death Star is "only" a few dozen kilometers in radius (Vader's Super Star Destroyer is something like 10 kilometers in length).

The point is, no man made weapon could ever destroy a planet, and the amount of energy needed to destroy a star, such as Kip Duron does in one of the Star Wars novels, is so much greater that its really just pure fantasy. No missle could ever do it. Nothing you could possibly imagine that would ever be remotely buildable by man would even make a "dent" in a star.

What about a character in Dragonball Z who casually vaporized earth (I mean turned it into a cloud) like nothing, could a character with that kind of power destroy an entire star?
Quantum_Conundrum
QUOTE (Phenomenal+Jan 3 2008, 08:14 PM)
What about a character in Dragonball Z who casually vaporized earth (I mean turned it into a cloud) like nothing, could a character with that kind of power destroy an entire star?

Ok, this is ridiculous now, but no.

The amount of power used to vaporize a planet is still just a blip compared to what you would need to destroy a main sequence star. So not even your dragonballz character could do it.
Noumenon
Shouldn't this be debated on the cartoon network forum? LOL
Phenomenal
QUOTE (Quantum_Conundrum+Jan 4 2008, 03:13 PM)
Ok, this is ridiculous now, but no.

The amount of power used to vaporize a planet is still just a blip compared to what you would need to destroy a main sequence star. So not even your dragonballz character could do it.

No I used Dragonball as an example just like I used the Deathstar from Star wars. I am just trying to give an examples.

Please prove to me how an enormous reactor to produce so much energy (which could vaporize planets) can't destroy a star?
buttershug
QUOTE (Phenomenal+Jan 4 2008, 06:43 PM)
No I used Dragonball as an example just like I used the Deathstar from Star wars. I am just trying to give an examples.

Please prove to me how an enormous reactor to produce so much energy (which could vaporize planets) can't destroy a star?

I can stamp on an ant but not an elephant.
planet/star would be a much smaller ratio.
EarthScientist
Are you guys all kids here or what, we need those stars,they were created for a very good reason, there are no accidents for the most part in this engineered universe and what would knowledge of the power of a star do for you anyway? How does that information enhance you?
buttershug
QUOTE (EarthScientist+Feb 15 2008, 05:20 AM)
Are you guys all kids here or what, we need those stars,they were created for a very good reason, there are no accidents for the most part in this engineered universe and what would knowledge of the power of a star do for you anyway? How does that information enhance you?

Helps us get at the truth of whether the universe is engineered or not. Some of us care about accuracy.
wcelliott
QUOTE
Some of us care about accuracy.

Obviously, we're in the minority.

The power the sun puts out is fairly easily calculated. (Power is the rate of the release of energy, BTW.)

One square meter of sunlight at the radius of earth's orbit has 1.365kW of power.

The radius of earth's orbit is 93million statute miles.

If you're really interested in the sun's output power, go calculate the surface area of a sphere with a radius of 93million miles, in square meters, and multiply that number by 1.365kilowatts.

As for Death Stars, superhero characters in video games, etc., feel free to make up your own answers.
Latrosicarius
If the Earth fell into the Sun, it would go bye bye. Does that answer your question?
El_Machinae
I never thought I'd reference www.stardestroyer.net as a reference on a science forum, but the numbers required to blow up Aldaraan are in that website. Beware the geekery though!
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