the sun is not a planet according to the current definition. the sun was formed by a bunch of gas swirling about in space getting caught up in their own gravity. they started swirling fasting and faster and clumping more and more until gravity crushed all this gas together to form this large mass. but the gas inside was so hot, the particles were colliding with each other and releasing massive amounts of energy, which allowed the reaction to continue. this is how the sun works. one day, when the gas slows down, the sun will die out and the gas will not get pulled together so much anymore, so the sun will get extremely big (swallow half of earth) and then, once all the energy was gone, it would collapse under it's own gravity into a brown dwarf and possibly supernova (really big explosion) or even create a black hole. this is 5 billions years off, give or take a few million years.
2007-03-09 19:49:37
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answer #1
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answered by shawntolidano 3
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The Sun and planets were formed from the remnant of a previous star that went through a supernova. The clumps and pools of gas and rock collected into larger masses until the largest mass in the center achieved sufficient gravity to fuse hydrogen. At this point the Sun became a star. The fusion of hydrogen into helium will continue for about ten billion years. As the hydrogen runs out, helium fusion will begin. Helium fusion is not as efficient a reaction as hydrogen fusion, so the Sun will cool and swell while turning red. This is the beginning of the Red Giant stage. As helium is fused into lithium, then beryllium, boron etc. the Sun will continue to swell until an iron core reaches sufficient mass that it's gravity collapses the outer layers while shedding much of it's mass. The is a nova. The Sun is not massive enough to experience supernova, so nova is as dramatic as it gets for the Sun. After nova, the sun may become a white dwarf for a short time if the collapse produces sufficient gravity to fuse the last few atoms of light elements. When all the fuel is used up the Sun will become a brown dwarf, a very small, dense ball of mostly iron rock.
We know that the Sun is a second generation star (born of the remnant of a supernova) because of the presence of heavy metals in our solar system. A star can fuse atoms up to an atomic weight of twenty-six (iron) to produce heat and light. The fusion of iron into heavy metals requires a massive input of energy. This level of pressure and heat is only supplied by a supernova. During this colossal explosion, some of the iron at the core of a giant star is fused into the heavy metals. This is the only event in the universe that creates these elements that are so abundant in our solar system.
2007-03-10 11:52:06
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answer #2
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answered by infinity 3
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hi, first of all let me tell you that sun is a star and not a planet. In fact we have much bigger stars in the universe than the sun. But as they are very far from the earth we find them to be very small.
Now, its formation : A star is a cluster of gases, predominantly helium and hydrogen.
The molecules of these gases, under the effect of gravitation, start contracting. This results in increase in pressure and temperature. At a high temperature the hydrogen undergoes a nuclear fusion reaction and forms helium and release huge amount of energy in the form of heat and light. It is this energy that we get from sun.
An average star has a life of billions of years. Our sun is now left with 5000 millions years in its life.
This is how sun formed. I hope you have now got your answer and must be curious to now what will happen after 5000 millions years ago.
so go for it ask questions. I am not writting here because you might get bogged down with too much sudden information.
ok bye
take care
happy learning.
ashutosh
2007-03-10 05:20:31
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answer #3
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answered by Anonymous
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It is Nature's Phenomena. Before the starrt of this Cosmos it was darkness around and the Galaxy was with Start Lights. The rotation of Starts within their Circles and the Planetary placement brought the Dhruva Start as Pole star and the Planets took natural phenomena of encircling within their power of gravitational force and the Sun being a powerful Planet next to Stars has come into existence giving the life to all species of the world and that the Sun was formed for the Life Cycle of the Species and Humane on the Word from Cosmos from Darkness to Light- the formation of Sun came into existence.
2007-03-10 03:58:44
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answer #4
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answered by sr50kandala 3
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first of all let me tell you that sun is a star and not a planet. In fact we have much bigger stars in the universe than the sun. But as they are very far from the earth we find them to be very small.
Now, its formation : A star is a cluster of gases, predominantly helium and hydrogen.
The molecules of these gases, under the effect of gravitation, start contracting. This results in increase in pressure and temperature. At a high temperature the hydrogen undergoes a nuclear fusion reaction and forms helium and release huge amount of energy in the form of heat and light. It is this energy that we get from sun.
An average star has a life of billions of years. Our sun is now left with 5000 millions years in its life.
2007-03-13 06:47:56
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answer #5
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answered by irfan 3
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A cloud of gas and dust called a nebula was pulled in together under gravity spinning and pulling in closer until it became very hot in the centre. Then, hydrogen atoms began to fuse together (nuclear fusion) to form heavier elements, this process generating energy to be released as heat and light. The centre of the nebula had become held together strongly, forming the Sun and the rest of the dust cloud later attracted together by gravity in places to form the planets that orbit the Sun, not hot enough to undergo nuclear fusion.
2007-03-13 06:14:26
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answer #6
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answered by Andrea C 1
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All the stars are formed from clouds of interstellar gas and dust. Our sun is formed from a nebula. This nebula contained mainly hydrogen and oxygen and about 1 percent solid matter like iron. These stuff started to attract each other because of gravity and started to swirl around. They formed clumps of matter, later these clumps attracted each other and became big enough to produce energy. Because of high pressure and temperature, nuclear fusion took place and released energy. This was the birth of the Sun.
2007-03-10 19:35:27
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answer #7
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answered by azin rouhi 1
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Sun is also a star. The formation theory of any star is same for Sun too. There are a lot of theories regarding formation. Star was formed from a stellar cloud / dust. When this dust got contracted due to its gravity, heat was generated. The tremendous heat thus generated had set nuclear explosions which in turn released enormous heat and light making the star visible in the present shape. It is difficult to explain in details here.
There are several sites to learn more. You may refer these two.
http://www.ldolphin.org/stars.html,... http://ircamera.as.arizona.edu/natsci102...
2007-03-14 01:28:07
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answer #8
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answered by Wiser 2
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From the big bang. The MACHO'S (massive compact halo objects) collided against each other and formed hi temperature hydrogen and helium which are the constituents of most of the stars.
2007-03-12 12:16:59
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answer #9
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answered by Shreyan 4
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In the begining, God created the Heavens, and the Earth...
nobody really knows, everybody has a guess.
2007-03-10 03:56:00
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answer #10
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answered by shamus_jack 3
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