T O P I C ��� R E V I E W
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Ritten
Member # 417
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posted
Universe at Least 12.5 Billion Years Old-Scientists LONDON (Reuters) - A team of international scientists may have found the answer to a question that has baffled astronomers for centuries: how old is our universe? At least 12.5 billion years old, give or take a few billion years, according to new research published in the science journal Nature on Wednesday. Roger Cayrel, of the Paris-Meudon Observatory in France, and his colleagues in Europe, South America and the United States calculated the age of the universe by taking a different approach. Instead of measuring the expansion rate of the universe or the velocities of distant stars, they measured amounts of the radioactive elements thorium and uranium in an ancient star named CS31082-001 using a technique called radioactive cosmochronometry. ``The ages of the oldest stars in the galaxy indicate when star formation began and provide a minimum age for the universe,'' Cayrel said in a study. By their best calculations CS31082-001 is about 12.5 billion years old, with an error factor of about three billion years. In a commentary on the research, Christopher Sneden of the University of Texas in Austin described the study as a major advance in radioactive cosmochronometry. ``We may expect to find more examples of such stars, as our survey of the galactic halo with the new generation of very large telescopes is just beginning,'' he said. ``With new discoveries, more age estimates will be found, further nailing down the exact age of the universe.'' ------------------ "One's ethics are determined by what we do when no one is looking" Nugget Star Trek: Gamma Quadrant Star Trek: Legacy Read them, rate them, got money, film them "...and I remain on the far side of crazy, I remain the mortal enemy of man, no hundred dollar cure will save me..." WoV
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Malnurtured Snay
Member # 411
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posted
Wait 'til Omega sees this ------------------ Star Trek Gamma Quadrant Average Rated 6.83 out of 10 Smileys by Fabrux *** "Oh, yes, screw logic, let's go for a theory with no evidence!" -Forum Member Who Shall Be Nameless. 11:48am, Jan. 19th, 2001
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First of Two
Member # 16
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posted
well, with an error factor of 33%, it's not a particularly EXACT range of reckoning... but even assuming maximum arror, it STILL would make the Universe a good 9 billion years old.------------------ "My knowledge and experience far exceeds your own, by, oh, about a BILLION times!" -- Q
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Omega
Member # 91
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posted
My immediate impression:A team of international scientists may have found the answer to a question that has baffled astronomers for centuries: how old is our universe? Again? But without knowing exactly how such a process works, I can not comment further. ------------------ Disclaimer: "All references to vices and of the supernatural contained in this game are for entertainment purposes only. _Over_The_Edge_ does not promote satanisim, belief in magic, drug use, violence, sexual deviation, body piercing, cynical attitudes toward the government, freedom of expression, or any other action or belief not condoned by the authorities." - `OverTheEdge'
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Quatre Winner
Member # 464
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posted
Here's the article. http://www.chron.com/content/interactive/space/astronomy/news/2001/ds/20010207.html Read. ------------------ "Okashii na... namida ga nagareteru. Hitotsu mo kanashikunai no ni." (That's funny... my tears are falling. And I'm not sad at all.) - Quatre Raberba Winner
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Ritten
Member # 417
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posted
I did a copy and past from Yahoo.... ------------------ "One's ethics are determined by what we do when no one is looking" Nugget Star Trek: Gamma Quadrant Star Trek: Legacy Read them, rate them, got money, film them "...and I remain on the far side of crazy, I remain the mortal enemy of man, no hundred dollar cure will save me..." WoV
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The Talented Mr. Gurgeh
Member # 318
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posted
The process is limited by the current level of knowledge of the constitution of stars and initial abundances of the elements in the stars. As more information is gathered about star composition, the guesses should get better. This article is a little more detailed, I think. ------------------ *Kenshiro gets off bed made from solid stone* *Bed made from solid stone explodes* Fist of the North Star
[This message has been edited by Gurgeh (edited February 09, 2001).]
[This message has been edited by Gurgeh (edited February 09, 2001).]
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TSN
Member # 31
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posted
"Universe at Least 12.5 Billion Years Old-Scientists" Wow. Those are some pretty ancient astronomers... ------------------ My new year's resolution is the same as last year's: 1024x768.
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Nim
Member # 205
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posted
That's what I thought. Awfully long moustache...------------------ Here lies a toppled god, His fall was not a small one. We did but build his pedestal, A narrow and a tall one. -Tleilaxu Epigram
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