At very high temperature how sun is still in globular form and having gravity and till not exhausted?

Question

In very high temperature all things in this world will burn and become dust ( nothing ) But sun alone is still there, how is this possible

Answer 1

Fire is Plama form of oxygen.
Sun does not contains particles but gases which are burning on high temperatures.
Nuclear Fission is also a cause.

Answer 2

At very high temperatures, all things become gas and plasma (not dust and nothing). Sun is also a big ball of gas and plasma (atoms stripped of the electrons). Because of gravity, the shape is held together and even with that high temperature, most of the mass of the sun is held together ( a small quantity escapes as solar flares). Gravity is a property of mass and is balanced by the tendency of the hot gases to expand. When the sun cools down (when the hydrogen is converted to helium), the sun starts contracting and that contraction again leads to a rise in temerature and pressure leading to another nuclear fusion reaction etc. Quite complicated isn't it?

Answer 3

The sun is billions of times larger than the Earth and the sun is not burning(combustion).The sun undergoes nuclear fusion.
The sun is made of hydrogen molecules which are being converted to helium molecules and this releases a tremendous amount of energy which is so much that it causes explosions and this energy is liberated as heat and light which is intensive enough to reach all the planets so far away.
One day after a few billion years the sun will stop emitting energy (when all the hydrogen has been converted)
As the spherical shape it is due to gravity of the sun which pulls all the gas molecules towards it.
Gravity(the force that pulls object towards each) is present in all objects(from a pin to a car)but is is such a weak force that it needs a larger amount of matter(like in a planet or a star)to actually pull another object.

Answer 4

Sun is a very hot ball of gas.It is composed of hydrogen,helium and some other elements.The existence of sun can be explained by a process called nuclear fusion,in which hydrogen nuclei fuse together to form helium.In this reaction a huge amount of energy is liberated which we receive in the form of heat and light.
Sun is said to be an "oblate spheroid" in shape.It appears spherical to the human eye.
Sun has a long way to go until it gets exhausted and becomes a white dwarf.It is around 5 billion years old and is estimated to possess another 5 billion years of hydrogen supply.

Answer 5

The sun fuses 2,000,000 tons of hydrogen into slightly less than this weight of helium each and every second. The small amount of mass that is lost in the process is converted into pure energy. This has gone for about four billion years and it will continue for an equal amount of time.

Answer 6

Well - first off the sun is not in fact "burning". It is undergoing nuclear fusion (and burning things doesn't destroy them: you still get matter left behind, like carbon dioxide gas, ash, and water).

Basically, all stars (our sun included) start off as vast clouds of gas. Usually mostly hydrogen, but with a mixture of other elements. This cloud collapses in under its own gravity, getting denser and denser, until the densityat the center is such that it actually squashes the hydrogen atoms together. This is nuclear fusion (fusing two nuclei together to form a new element: two hydrogens fuse to make one atom of helium), and it produces energy. So you then have two forces, gravity pushing in, and fusion-produced energy (light and heat) pushing out. Eventually, as the star keeps collapsing in, and getting hotter and hotter in the centre, you reach a balance - where the force pushing in is exactly equal to the force pushing out. The gas cloud, now rather hot and bright, stabilises as a sphere: this is a star!

Now for the cool stuff:
Eventually, the odds of one hydrogen atom in the centre having another hydrogen right next to it becomes low, as much of it has already been converted to helium. At that point, the star starts squashing other atoms together (like one hydrogen plus one helium, or two heliums together). Depending what fuel the star switches to, this might produce more energy, or less energy. If this reaction makes more energy, the outwards force is slightly stronger, so the star grows until it reaches a new equllibrium; if it produces less energy, the star shrinks. This is called "going nova", as the star is using a new fuel ("nova" meaning "new").

This will happen several times, each time the star runs out of one fuel, and moves on to squashing different "fuel atoms" together. Eventually, the star will reach iron; this is called the "Iron Catastrophe". Squashing iron atoms together actually uses up more energy than it produces, so the outwards force can no longer balance the inward force of gravity. What happens then is that the core of the star - the dense centre where the actual reactions were occurring - collapses in on itself in a massive explosion of energy, and producing all the elements heavier than iron. This blows-away the outer bits of the star (it's "atmosphere"), and is called the star going "supernova". The eplosion produces another lot of clouds of gas that will, eventually, collapse in on themselves, along with the clouds from other supernova-explosions, to form new stars. Of course, these new "second-generation" stars will *start off* with less hydrogen, and more of the heavier elements, and so will have a shorter lifespan.

It also leaves behind the dead core of the old sun.
Depending on the size of the original star (the bigger it was, the stronger its gravity was), this dead core might be a dwarf star. If the star was particularly large, the core will be so massive that the gravity will actually squash the protons and electrons of the atoms in it together, to form neutrons: this is a neutron star. Finally, if the star was super-big (basically around 5 times the size of our sun), then the gravity is so strong that it squashes all the matter together more densely than it is possible for matter to exist without breaking the laws of physics. The star then collapses to a singularity (a point with exactly zero volume), and leaves behind a sort of "gravity-echo" of itself, with all the mass and gravity: this is a Black Hole. To gove you an idea of how densely-squashed matter would have to be to form this: if you took the earth and squashed it until it was as dense as a black hole (not going to happen - don't worry), it would be less than 2 cm across.

One upshot of this is that every element heavier than iron was made in a supernova. If you own any gold jewelry; that was made in a dying star!
More - every element heavier than hydrogen (and a little bit of helium) was made in one of the first stars, and then exploded across the universe when it died. All the carbon, oxygen and nitrogen in your body was once in the heart of a sun: we are star-stuff.

Answer 7

The sun itself produces energy from burning; it converts hydrogen atoms to helium atoms at high compression of dust and gases

Answer 8

We dont need to worry about it. because sun will explode in est. 15 to 20 Million years from now!!!

Answer 9

if you want all the information of the sun from a-z try answers.com