YES I do: space my seem ,empty, but it is filled with thinly spread gas and dust, this gas and dust,is called, Insterstellar Medium.
The atoms of gas are mostly Hydrogen(H2) and the gas atoms
are about a centimeter apart. The dust is microscopic,grains .The
dust is a carbon and silicone,in some places this interstellar medium is collected into a big cloud of gas and dust know as nebula.This is a birth place of stars because the gas and dust is what makes up a star.In fact ,our sun was probably born in a
nebula nearly 5 billion years ago.Stars life are long , but we can see the stages of stellar,birth,aging and death in the heavens. Stars are born they grow up exist many years and they die.
And there's and exciting battle between the force of gravity and gas pressure to that makes it exciting and explosive.
2006-12-20 03:52:41
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answer #1
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answered by aura gcranberrymadurogustosocinc 2
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Campbelp2002 found the right places.
In short:
Cloud of dust and gas falls onto itself (gravity). When compressed enough, friction and loss of gravitational potential give off heat (proto-star).
At some point, pressure and temperature are sufficient to turn on fusion (star is born).
Stellar wind (radiation pressure of light) pushes away light molecules, creating an empty zone around the star, leaving only denser lumps which may eventually clump together and form planets. The matter pushed outward may form an Oort cloud (ice lumps, comets...).
As fusion begins, the star is a "Zero Age Main Sequence" star: its features (temperature, colour, lifetime, future history) are fixed by the mass that it has at that moment -- unless something drastic happens from the outside.
It will fuse hydrogen into helium for most of its "normal" life. After that, things may evolve rapidly and what follows depends on its mass.
Very light stars, regarless of how long ago they formed, could still have plenty of core hydrogen left. Very massive stars don't live very long and have very brutal endings.
2006-12-20 11:28:30
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answer #2
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answered by Raymond 7
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first some dust and old star particles come together and with their grativy, they stick up and fusion reaction occurs in it over course of time.
Also they can be formed by super nova explosion as well.
star when born it's blue or white.
when old they turn yellow then red and then die.
they may form a neutron star by changing of its particles into nuetrons.or may end up in an supernova explosion or may turn into black hole.
however for formation of black hole and super nova the star nedds to be big(about 5-20 times our sun).
have a good time.
2006-12-20 11:26:52
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answer #3
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answered by Ankit B 4
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Check the wikipedia article in the source. If that is too complicated, try the second source.
2006-12-20 11:15:52
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answer #4
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answered by campbelp2002 7
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every star got a certain life.after thet all of nuclear reactions occured it will die.about 4-5 miliyard years
2006-12-20 11:19:28
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answer #5
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answered by celever 2
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check this out
2006-12-20 11:27:10
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answer #6
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answered by vampy vampierqueen 2
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