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Looking for other Earths? Here’s a list
msnbc.com ^ | 02/19/06 | Alan Boyle

Posted on 02/19/2006 12:10:25 PM PST by KevinDavis

ST. LOUIS - An astronomer involved in a NASA mission to look for Earthlike planets beyond our solar system has winnowed through thousands of stars to come up with a top-10 list that includes some of the favorite haunts for science-fiction aliens.

Actually, the lineup from Margaret Turnbull at the Carnegie Institute of Washington is broken down into two top-five lists: one for the radio-based search for extraterrestrial intelligence, or SETI, and the other for the NASA mission, known as the Terrestrial Planet Finder.

The SETI stars will be on the list of targets for the privately funded Allen Telescope Array in California, which is due to begin limited operation with 42 linked radio dishes this spring. But the top prospects for the Terrestrial Planet Finder are currently in limbo, because NASA has put the mission on indefinite hold.

(Excerpt) Read more at msnbc.msn.com ...


TOPICS: Miscellaneous; News/Current Events
KEYWORDS: artbell; earth; earth2; exoplanets; space; tauceti; xplanets
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To: TheForceOfOne
Do not laugh too hard, One... You may be in the next batch of suspects. Have your bribe funds handy.
101 posted on 02/20/2006 8:39:01 PM PST by Bender2 (Redid my FR Homepage just for ya'll... Now, Vote Republican and vote often)
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To: longshadow

I take it you've never been in sales.


102 posted on 02/20/2006 8:56:27 PM PST by SoCal Pubbie
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To: gore_sux; PatrickHenry; RadioAstronomer
It seems to me that your models and theories are still in a state of flux,

All scientific theories are held tentatively pending the presentation of falsifying data or observation. That isn't unique to Cosmology; it's true of all of science, since scientific theories can never be proven true, only disproved if they are wrong. That's how science works.

while the original statement "we don't know jack squat about the universe" still stands as fact.

No; it's an unsupported assertion contradicted by the question posed in #62, which you have not answered:

"If our knowledge of the Universe is so paltry, how is that the angular power spectrum predictions [of the] Lamda-CDM model fit the actual measured data so well?"

The very link you provided has several "corrections" made by scientists on previous "knowledge":

New Age for the Universe

Perhaps you should read more carefully:

But the production ratio is poorly known from nuclear physics models, so Dauphas (2005, Nature, 435, 1203) combines the Solar System 238U:232Th ratio with the ratio observed in very old, metal poor stars to solve simultaneous equations for both the production ratio and the age of the Universe, obtaining 14.5+2.8-2.2 Gyr.

The knowledgeable reader will note that the resulting Age estimate, "14.5+2.8-2.2 Gyr." STRADDLES the previously accepted value (derived by other methods)! IOW, this result in no way contradicts the previously accepted value -- it is completely consistent with it, and since it represents a new method of doing the age estimate, it provides additional confirmation of the previously accepted age estimate! When Wright wrote "New Age for Universe" he didn't mean that it contradicted the accepted value, he meant it was a new Estimate, based on a new method!

This could be a case where the effects of good Italian wine overwhelmed the scientific super-ego of Kolb et al.

Perhaps you should try readying that again:

Cosmic Ripples instead of Dark Energy? 16 Mar 2005 - Rocky Kolb et al. have suggested that large scale ripples in space-time could explain the observations of the accelerating Universe that seem to require dark energy - the vacuum energy density that is equivalent to the cosmological constant. Despite issuing press releases and getting some coverage, even in the Los Angeles Times although 10 days later, I find the Kolb et al. arguments lacking. In Einstein's General Relativity, the local metric determines the local stress-energy tensor, so the large scale ripples do not change the need for a negative pressure and hence a vacuum energy density or cosmological constant based on the supernova observations of the local geometry of space-time. Here local means within about 10 billion light years (!) but we can easily observe a region this large. Hirata & Seljak also disagree with Kolb et al., as do Geshnizjani, Chung & Afshordi and Flanagan. This could be a case where the effects of good Italian wine overwhelmed the scientific super-ego of Kolb et al.

For those who have problems with reading comprehension, what Ned Wright is saying is that Kolb, et al, who have proposed an alternative explanation that does NOT require dark energy (a feature of the currently embraced Lamda-CDM model), are all wet. IOW, Wright is dismissing the challenge to the prevailing explanation for the the large scale structure and dynamics of the Universe. The prevailing paradigm remains intact; the challengers are the ones who were sent packing by Wright.

And even if Kolb, et al, were correct, it does not logically follow that "we don't know jack about the universe." Whether or not Kolb, et al are right, the predictions of the angular power spectrum, the existence of the CMBR spectrum matching the black-body curve, elemental abundance predictions, and a bevy of other potentially falsifying predictions about the Universe have been borne out by observation. If we "don't know jack about the Universe" how is that extraordinary accomplishment possible?

103 posted on 02/21/2006 7:47:43 AM PST by longshadow (FReeper #405, entering his ninth year of ignoring nitwits, nutcases, and recycled newbies)
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To: SoCal Pubbie
I take it you've never been in sales.

Science isn't decided by focus groups.

;-)

104 posted on 02/21/2006 7:50:17 AM PST by longshadow (FReeper #405, entering his ninth year of ignoring nitwits, nutcases, and recycled newbies)
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To: longshadow
You can take your theories and put 'em where the sun don't shine!
</internet idiot mode>
105 posted on 02/21/2006 7:57:19 AM PST by PatrickHenry (Virtual Ignore for trolls, lunatics, dotards, scolds, & incurable ignoramuses.)
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To: KevinDavis
I wonder where Chulack is???

Look it up on Wikipedia.

Seriesly. This is Hugh. It'll stune your beeber, just like gettin' hit with a zat, for cryin' out loud.

All your gate addresses are belong to us.

106 posted on 02/21/2006 7:58:46 AM PST by ArrogantBustard (Western Civilisation is aborting, buggering, and contracepting itself out of existence.)
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To: bvw

Why do bad guys always have glowing eyes?


107 posted on 02/21/2006 8:02:25 AM PST by ArrogantBustard (Western Civilisation is aborting, buggering, and contracepting itself out of existence.)
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To: Constantine XIII
They are basically the canine equivalent of hobbits. :P

Poodles are members of a weird religious cult. --Rita Rudner

108 posted on 02/21/2006 8:04:13 AM PST by dread78645 (Intelligent Design. It causes people to misspeak)
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To: PatrickHenry
You can take your theories and put 'em where the sun don't shine!

You're not fooling anyone...but continue to live in your make-believe world where you oh-so-cleverly think you are.
109 posted on 02/21/2006 8:08:31 AM PST by beezdotcom
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To: longshadow; gore_sux
If we "don't know jack about the Universe" how is that extraordinary accomplishment possible?

To be more precise...notwithstanding gore_sux' restatement, the first assertion (the one that caused you to lose your ever-loving mind) was "we know very little". Relatively speaking, you can't demonstrate that to be false. You can continue to trot out every last bit of scientific knowledge and the successful predictions that arise from it, and you still won't (yet) be definitive on how many spatial dimensions actually exist, the actual topology of the spatial manifold, the mass of the Higgs boson, or any other of a number of properly hypothesized issues in physics and astrophysics that have not yet been resolved down to the level of fidelity that would make further study unnecessary.

Oh, wait...I see. You're confusing a "knowledge of boundary conditions" with an end-state. To you, "close enough" is "good enough", I guess. I bet you're great to follow down a road. "Hey, if I can keep it between the ditches, I know all I need to know to drive!" Tell it to the cop.

This reminds me of an argument I once had with a friend, who insisted 'he knew more words than me'. He played to my indignation for a little while - until I remembered that no matter how good my English vocabulary might be, he also knew most of the same words in Spanish. No matter how many nuggets of knowledge and predictions you quote, there are still gaps to be filled - and where the gaps aren't overt, there are constants and measurements that still need to be refined from 8 significant digits to 14, or 23.

But keep trying.
110 posted on 02/21/2006 8:27:47 AM PST by beezdotcom
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To: longshadow
Science isn't decided by focus groups.

If only that were true. Ever apply for a grant renewal?
111 posted on 02/21/2006 8:29:59 AM PST by beezdotcom
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To: Bender2

ping


112 posted on 02/21/2006 10:31:44 AM PST by i.l.e. (Tagline - this space for sale....)
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To: longshadow
And even if Kolb, et al, were correct, it does not logically follow that "we don't know jack about the universe." Whether or not Kolb, et al are right, the predictions of the angular power spectrum, the existence of the CMBR spectrum matching the black-body curve, elemental abundance predictions, and a bevy of other potentially falsifying predictions about the Universe have been borne out by observation. If we "don't know jack about the Universe" how is that extraordinary accomplishment possible?

I would not be so bold as to equate taking a few radiation measurments with unlocking the mystery of the universe. From everything I've read there is still quite a debate about the origins of the universe. Even if the supposed "origin" is pinpointed one can always ask the questions "what came before that?" or "what created the origin?"

113 posted on 02/21/2006 10:37:53 AM PST by gore_sux (and so does Xlinton)
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To: i.l.e.
I put you on my ping list. Latest edition hot off the press...

I have more New York Slimes Editions on my FR Homepage and my Archives Page

114 posted on 02/21/2006 3:31:22 PM PST by Bender2 (Redid my FR Homepage just for ya'll... Now, Vote Republican and vote often)
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To: longshadow

Well, I guess that proves it. Focus groups are for marketing, not sales. I was referring to your techniques of persuasion. They're abysmal.


115 posted on 02/21/2006 6:17:27 PM PST by SoCal Pubbie
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To: NCC-1701
STAR TREK
116 posted on 02/23/2006 1:58:26 PM PST by NCC-1701 (RADICAL ISLAM IS A CULT. IT MUST BE ELIMINATED FROM THE FACE OF THE EARTH.)
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X-Planets
· join · view topics · view or post blog · bookmark · post new topic · subscribe ·
Google news searches: exoplanet · exosolar · extrasolar ·

117 posted on 07/03/2011 2:11:55 PM PDT by SunkenCiv (It's the Obamacare, stupid! -- Thanks Cincinna for this link -- http://www.friendsofitamar.org)
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