Is the Sun a binary?

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15 years 9 months ago #15376 by tvanflandern
<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Pluto</i>
<br />We know that from large compact matter such as the so called black holes eject seeds of compact matter that reforms the galaxy and seeds (gravity sinks) new stars.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">Did you mean quasars? Black holes (leaving aside the problem that no such thing exists) cannot eject matter of any kind. -|Tom|-

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15 years 9 months ago #20326 by shando
Replied by shando on topic Reply from Jim Shand
<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by tvanflandern</i>
The first stars are made by the extremely slow collapse of large clouds of interstellar gas under the action of self-gravitation.
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

Un ... oh! "First" stars in an infinite universe with no beginning and no end?

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15 years 9 months ago #15377 by Jim
Replied by Jim on topic Reply from
Tom, I don't get the idea that galaxies live and die. What do you mean by a dead galaxy or star for that matter? IF a star does "burn out" and "dies" in some process what happens to the protons(atoms, neutrons) that make up all stars?

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15 years 9 months ago #20226 by tvanflandern
<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by shando</i>
<br />Un ... oh! "First" stars in an infinite universe with no beginning and no end?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">The discussion was about the "fisrt stars" in a forming galaxy. All forms are finite, even though substance is infinite. Galaxies come and go too, as do superclusters, great walls, and every kind of structure. But when any form ends its existence, all the substance that comprised it remains available to make new forms. Nothing is *ever* created or uncreated; it just changes form. -|Tom|-

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15 years 9 months ago #15378 by tvanflandern
<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Jim</i>
<br />Tom, I don't get the idea that galaxies live and die.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">In an infinite universe, all forms have a beginning and an end. That applies to galaxies too. Even conventional cosmology recognized that some galaxies are old, while others are young.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">What do you mean by a dead galaxy or star for that matter? IF a star does "burn out" and "dies" in some process what happens to the protons(atoms, neutrons) that make up all stars?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">It doesn't matter whether the dead galaxy's last stars blow themselves into tiny bits or remain as large, non-radiating, inert masses. All their matter content remains available to start a new galaxy or to be incorporated into an already growing galaxy.

Specifically, the largest stars have the shortest lifetimes and usually end as supernovas. The smallest stars are the most likely to become "dead" (non-radiating). But those small masses still gravitate, and can participate in forming new stars when enough mass is available and something triggers a new round of star formation. -|Tom|-

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15 years 9 months ago #15379 by Jim
Replied by Jim on topic Reply from
In the standard model the stars form and shine for a time and become WDs or SNs. Are you saying the WDs remain in that form when galaxy burns out and a new galaxy forms later on? Or do the WDs reform as new "normal" stars like the sun? Is the universe to become all WDs in the end? If not how does WD stuff transform into protons?

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