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Author Topic:   Star Formation (Star Condensation)
vimesey
Member
Posts: 779
From: Birmingham, England
Joined: 09-21-2011
Member Rating: 4.2


Message 31 of 33 (667747)
07-11-2012 6:29 PM
Reply to: Message 30 by Alfred Maddenstein
07-11-2012 6:13 PM


Re: Same wrong stuff, different day...
That is, that planets are nothing but cooled stars.

Well, the mass of the sun is approximately 332,950 times the mass of the earth. What happened to the remaining 332949/332950ths of the star's mass when it cooled to the earth's size ?

(And the sun is a reasonably modest sized star - there's way bigger ones out there).


This message is a reply to:
 Message 30 by Alfred Maddenstein, posted 07-11-2012 6:13 PM Alfred Maddenstein has responded

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 Message 32 by Alfred Maddenstein, posted 07-11-2012 8:36 PM vimesey has not yet responded

    
Alfred Maddenstein
Member (Idle past 1314 days)
Posts: 565
Joined: 04-01-2011


Message 32 of 33 (667754)
07-11-2012 8:36 PM
Reply to: Message 31 by vimesey
07-11-2012 6:29 PM


Re: Same wrong stuff, different day...
Well, yes, that is a difficulty with the hypothesis if the earth-sun mass relation is correct as it currently stands. Heavier elements in the sun would then result in a few thousands planets like earth. The author contest the relationship while myself, I have not reached a conclusive opinion on that. I can't say until I understand much better than I do what mass and gravity is.
Anyway, the current understanding of what drives the sun and other stars and how exactly is not the last word to be spoken to be sure. What though I have no doubt about is that the whole big bunk framework to stellar and planet formation is definitely pure fancy and will be completely abandoned in a few decades from now. Whatever is the case, the Sun is not the second or third generation of stars in existence. The scenario where the Milky Way is as old as the existence itself is certainly all the way off. One might be much older than currently estimated, the other may be incompatible in principle with the idea of measurable age.
The current figure for a single spin of the galaxy is 250 million of years. Spinning is how it has got its into its present shape. Forty odd spins all in all is extremely unlikely, methinks.

Edited by Alfred Maddenstein, : grammar


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NoNukes
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Posts: 9313
From: Central NC USA
Joined: 08-13-2010
Member Rating: 2.6


Message 33 of 33 (667782)
07-12-2012 7:48 AM
Reply to: Message 32 by Alfred Maddenstein
07-11-2012 8:36 PM


Re: Same wrong stuff, different day...
Well, yes, that is a difficulty with the hypothesis if the earth-sun mass relation is correct as it currently stands. Heavier elements in the sun would then result in a few thousands planets like earth. The author contest the relationship while myself, I have not reached a conclusive opinion on that. I can't say until I understand much better than I do what mass and gravity is.

First, what is a "conclusive opinion"?

Secondly, you don't need to know what mass and gravity are in order to calculate the ratio of mass sun/ mass of earth. All you have to accept is that Newton's law of gravitation is essentially accurate for the solar system. It is quite easy to calculate the mass of nearby masses that have tiny objects in orbit around them, and both the sun and the earth have such objects. There is scant reason to question that the mass of the sun is about 330,000 times that of the earth.

Edited by NoNukes, : No reason given.

Edited by NoNukes, : No reason given.


Under a government which imprisons any unjustly, the true place for a just man is also in prison. Thoreau: Civil Disobedience (1846)

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