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Ready to Explode: Inside Look at an Unstable Star (Eta Carinae)
Yahoo News ^ | 12/2/03 | Robert Roy Britt - Space.com

Posted on 12/02/2003 6:35:50 PM PST by NormsRevenge

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To: null and void
Forrest! So good to see you! ;)
41 posted on 12/02/2003 10:54:15 PM PST by bd476
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To: Dog Gone
It's always been a weird sense of joy to me to look up at the stars and realize that what I see is history. For all we know, NONE of those stars exists today.

Bible speaks of a day when those we would call "liberals" and "socialists" (and muslims) have a major "oh shit" thing hiding in caves and running away from signs in the skies...

Indeed it is humbling to know that what we see up there may have already changed and be INCOMING! Local solar activity may be (and probably is) influenced by activity in other stars all throughout the galaxy and beyond.

Science is fun!

Don't press this with liberals. They find the TRUTH "offensive".

42 posted on 12/03/2003 1:40:39 AM PST by EUPHORIC (Right? Left? Read Ecclesiastes 10:2 for a definition. The Bible knows all about it!)
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To: NormsRevenge
LOL.. Ed can be easily categorized as a Red Dwarf. ;-)

I thought that would have been Robert Reich!

Mark

43 posted on 12/03/2003 1:55:30 AM PST by MarkL (Dammit Vermile!!!! I can't take any more of these close games! Chiefs 11-1!!! Woooo Hoooo!!!)
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To: Dog Gone
I didn't realize that humans were expected to be extinct within 7,500 years.

Sorry, I guess you didn't get the memo... You (and everyone else) are simply figments of my imagination... When I die, sorry, but you will all vanish in a *poof!*

Sorry to rain on your parade.

Mark

44 posted on 12/03/2003 1:57:46 AM PST by MarkL (Dammit Vermile!!!! I can't take any more of these close games! Chiefs 11-1!!! Woooo Hoooo!!!)
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To: NormsRevenge
It's all Bush's fault for not supporting the Kyoto Accords! Wake up Earth!

The evil Republicans are causing stars to explode with their reckless environmental policies!

</sarcasm>
45 posted on 12/03/2003 2:09:10 AM PST by Fledermaus (Fascists, Totalitarians, Baathists, Communists, Socialists, Democrats - what's the difference?)
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To: NormsRevenge
The reason for the danger is that Eta Carinae is like a nearby volcano waiting to explode, but we don’t know when. In the last few months, however, it has shown signs of new activity and it has astronomers riveted on its every move.

Well, while they were riveted on this one, an amateur from Japan spotted this one:

Brightest supernova in a decade captured by Hubble Space Telescope

46 posted on 09/07/2004 12:24:43 PM PDT by Ernest_at_the_Beach (A Proud member of Free Republic ~~The New Face of the Fourth Estate since 1996.)
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To: LibWhacker

About 150 solar masses, they speculate:

http://arxiv.org/abs/astro-ph/0310860

The observed masses of the most massive stars do not surpass about 150Msun. This may either be a fundamental upper mass limit which is defined by the physics of massive stars and/or their formation, or it may simply reflect the increasing sparsity of such very massive stars so that observing even higher-mass stars becomes unlikely in the Galaxy and the Magellanic Clouds. It is shown here that if the stellar initial mass function (IMF) is a power-law with a Salpeter exponent (alpha=2.35) for massive stars then the richest very young cluster R136 seen in the Large Magellanic Cloud (LMC) should contain stars with masses larger than 750Msun. If, however, the IMF is formulated by consistently incorporating a fundamental upper mass limit then the observed upper mass limit is arrived at readily even if the IMF is invariant. An explicit turn-down or cutoff of the IMF near 150Msun is not required; our formulation of the problem contains this implicitly. We are therefore led to conclude that a fundamental maximum stellar mass near 150Msun exists, unless the true IMF has alpha>2.8.


47 posted on 09/07/2004 12:56:49 PM PDT by mvpel (Michael Pelletier)
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To: mvpel
I meant to thank you for this. But the doorbell rang and I got totally distracted and forgot about it. I've really got to do these things immediately and not put them off for even a second!

Sooooooo . . . THANK YOU VERY MUCH, mvpel!! Very interesting. I knew there was some kind of limit. :-)

Wow, a 750+MSun star would be an awesome thing, if such exists. No doubt about that! (Wouldn't want to be ANYWHERE near it when it went supernova either!)

48 posted on 09/09/2004 2:14:44 PM PDT by LibWhacker (It is the black heart of Islam, not its black face, to which millions object)
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The Cycle of Cosmic Catastrophes: Flood, Fire, and Famine in the History of Civilization The Cycle of Cosmic Catastrophes:
Flood, Fire, and Famine
in the History of Civilization

by Richard Firestone,
Allen West, and
Simon Warwick-Smith


49 posted on 04/05/2008 8:44:20 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/_____________________Profile updated Saturday, March 29, 2008)
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Note: this is a topic from over five years ago.
 
Catastrophism
 
· join · view topics · view or post blog · bookmark · post new topic ·

50 posted on 04/05/2008 8:45:57 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/_____________________Profile updated Saturday, March 29, 2008)
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