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Author Topic: Formation of Sun  (Read 2560 times)

Offline suncorpse

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Formation of Sun
« on: 16/05/2006 10:28:44 »
1. there was a total darkness before the birth of the sun, in our solar system.
2. How the first fusion done at the very inception this is the great question.(helium was already existed there or came later)
3. a cluster of hydrogen's thick cloud gathered at one place and sun formed.
4. there is holding frame for the function of the sun and that is made of some different things which we don't know.
5. is iron ample in the sun in plasmic state
6. sun is well bind with the pressure onto it to remain at one place though it has a great mass

you please treat the above as question and resolve the formation of sun.  you know there are different mythological and other assumptions on sun, but as far as sun's formation is concern there is lot to see untouched.

or we are fix on this statement that "sun is only made of H and He".
or anything is different there on sun, show it now.


 

Offline daveshorts

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Re: Formation of Sun
« Reply #1 on: 17/05/2006 00:57:34 »
1) There wasn't complete darkness in the solar system before the birth of the sun as the sun is if I remember correctly a 2nd or 3rd generation star - it contains some debris from earlier stars that exploded in supernovae, so there would have been other stars in the galaxy in the sky, unless they were obscured by dust.

2) About a quarter of the universe's mass was helium after the big bang, and 3/4 hydrogen (plus odds and ends). The fusion probably started as a cloud of gas collapsed under its own gravity which will have caused it to heat up and get denser until the thermal pressure counteracts gravity, and you have a stable star.
 

Offline science_guy

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Re: Formation of Sun
« Reply #2 on: 18/05/2006 19:40:20 »
1) no.  There was light from other stars in the galaxy, though not much to see with.

2) The solar nebula was hit by stardust from nearby stars, causing it to spin.  The spinning also helped gravity to contract the nebula, and as the nebula became smaller, it started to spin faster.  at the center of the nebula, where most of the materials were, heated up due to friction, and because of the density and heat, two nuclei of atoms touched, causing fusion.  the fusion, creating more heat, caused more fusion, and the initial blast of fusion energy blew out the outer portion of the new sun.  The heavier elements were closer, and the lighter elements were farther away.  These elements eventually accreted to form the planets.  The rest of the material of the sun is held upon itself due to gravity balancing the fusion.

3) not only hydrogen, there was also heavier elements and other gases that form the planets.  The planets were form from the same cloud of gas.

4) if you mean how the sun doesn't explode from the fusion, the thing that holds the sun together is gravity

5) Iron would be found in the later portion of a star's life cycle, since fusion will run out quickly by the time it is making iron from the helium fusions.  Our star is far from the end of it's life.

6)  In space, it is not really remaining in one place.  The sun is spinning around the center of our galaxy with our arm, and shooting out towards the edge of the universe as the universe expands.  Nothing ever stays in one place.

E=MC2... m=deg/360 X C... C= PiD

therefore E=deg/360 X 2(PiD)
 

Offline suncorpse

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Re: Formation of Sun
« Reply #3 on: 19/05/2006 14:42:13 »
thanks you both for the replies. I was much eager to get the answers to find out how the "sun was formed", we know that there was the substitute light in the universe from the various stars, but as far our solar system is concern, that far light may be quite received on earth in the least form.
 

The Naked Scientists Forum

Re: Formation of Sun
« Reply #3 on: 19/05/2006 14:42:13 »

 

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