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Location: UFOUpDatesList.Com > 2007 > Jan > Jan 11

Cut From Different Cloth

From: Ray Dickenson <r.dickenson.nul>
Date: Wed, 10 Jan 2007 21:58:37 -0000
Fwd Date: Thu, 11 Jan 2007 08:05:41 -0500
Subject: Cut From Different Cloth


Hi List,

Debate about possible origins of intelligent life seems to have
been dominated by chauvinistic 'rare Earth' claims - accompanied
by a refusal to face facts. This could also have affected
supposedly reasoned judgments as to whether we should risk
signaling before checking who might be listening.

The chauvinist claim is that everything is OK, we are alone;
nothing we do affects anyone other than us.

Well, they've ignored some facts known for quite a while -

i) Hyron Spinrad found the metal content of stars - which
indicates age of star generation - increases towards galactic
centers. [Spinrad, Hyron 'Supermetallicity in nearby Galaxies'
1970 QrtlyJrnl of Royal Astronomical Society]

ii) Isaac Asimov calculated - "It is nine times to eighty one
times more likely that intelligence has arisen earlier in the
central region of our galaxy" - basically because the class II
stars of the central region were that much older.

and now, unknown to Spinrad or Asimov -

"Cut From Different Cloth

Modern cosmological models predict that small galaxies form
first, and later assemble into larger systems like our Galaxy.
Since the Universe initially only contained hydrogen and helium
(most of all other chemical elements being synthesized inside
stars), dwarf galaxies should have the lowest heavy element
content. Not so, say the astronomers."

http://www.physorg.com/news82127598.html

That news (7 Nov 2006) was that nearby dwarf galaxies, about a
tenth to a quarter of the distance to Andromeda our nearest
neighbor, are actually iron-rich, while the main body of the
Milky Way is relatively metal-poor (see text).

Does it interest us? Well, previously humans (well, those who
consider these things) thought, along with Asimov, that older
intelligent life would be concentrated in regular galaxies'
centers.

Now it seems our galaxy (mainly of relatively new stars) is
surrounded by 'dwarf galaxies' of old stars - more likely to
have intelligent life.

A bit like ranch-houses around a prairie full of (primitive)
live-stock?


Cheers

Ray D




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