Physics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufm.p52b..01b&link_type=abstract
American Geophysical Union, Fall Meeting 2006, abstract #P52B-01
Physics
1028 Composition Of Meteorites (3662, 6240), 6008 Composition (1060), 6015 Dust
Scientific paper
The NASA Stardust sample return mission collected thousands of particles from comet Wild2, a 4.5 km body that is believed to have formed in the Kuiper Belt. The analyses of these returned samples are providing new information on the nature and origin of solid grains that existed at the edge of the Solar Nebula, just beyond the orbits of the most distant planets. Unlike expectations of an assembly of presolar materials, it is evident that a major fraction of the solid grains were formed in the solar nebula. Among the most spectacular results are the finding of abundant high temperature minerals that are similar to analogs found in primitive meteorites. Most of these high temperature phases appear to have formed in the innermost regions of the solar system. The presence of these materials as grains larger that 10 microns implies that there was large scale mixing between the innermost and outermost regions of the solar nebula. The high temperature phases include Calcium Aluminum Inclusions, forsterite and enstatite.
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