[meteorite-list] MAJOR FLAW in new cosmic dust study

From: E.P. Grondine <epgrondine_at_meteoritecentral.com>
Date: Sun Jul 30 12:32:56 2006
Message-ID: <20060730163254.57502.qmail_at_web36908.mail.mud.yahoo.com>

Hi all -

Bingo!

"During its journey through interplanetary space, the
cosmic dust is charged with helium atoms by the solar
wind. At this point they are highly enriched with the
rare helium isotope 3He," explains Dr Hubertus
Fischer, head of the research program"

Unless the dust particles are sheltered from the sun's
3 He inside a comet from which they have not yet left
yet. Then the solar enrichment with 3He would be
confined to the exterior.

Yes, the normal flux of cosmic dust remains constant,
as marked by the 3He.

They did not measure comet dust. I wonder what the
isotopic marker for that might be.

good hunting,
EP





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Received on Sun 30 Jul 2006 12:32:54 PM PDT