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 __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ______________________________________________ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
