I. D. Hutcheon

Lawrence Livermore National Laboratory

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G. J. Wasserburg

California Institute of Technology

Peter Weber

Lawrence Livermore National Laboratory

Alexander N. Krot

University of Hawaiʻi at Mānoa

K. Nagashima

University of Hawaiʻi at Mānoa

Edward M. Stolper

California Institute of Technology

G. J. MacPherson

National Museum of Natural History

Allen Kennedy

Curtin University

G. R. Huss

University of Hawaiʻi at Mānoa

Lawrence Grossman

American Jewish Committee

Ben Jacobsen

Tilburg University

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Lawrence Livermore National Laboratory

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Centre National de la Recherche Scientifique

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Comet 81P/Wild 2 Under a Microscope

Science (2006)

D. E. Brownlee P. Tsou J. Aléon C. M. O'd. Alexander Tohru Araki

The Stardust spacecraft collected thousands of particles from comet 81P/Wild 2 and returned them to Earth for laboratory study. The preliminary examination of these samples shows that the nonvolatile portion of the comet is an unequilibrated assortment of materials that have both presolar and solar system origin. The comet contains an abundance of silicate grains that are much larger than predictions of interstellar grain models, and many of these are high-temperature minerals that appear to have formed in the inner regions of the solar nebula. Their presence in a comet proves that the formation of the solar system included mixing on the grandest scales.

Comet dust

Presolar grains

10.1126/science.1135840

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Citations (888)

The Origin of H2S by Thermal Sulfate Reduction: ABSTRACT

AAPG Bulletin (1996)

I. D. Hutcheon

10.1306/64eda1a4-1724-11d7-8645000102c1865d

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Oxygen- and magnesium-isotope compositions of calcium–aluminum-rich inclusions from CR2 carbonaceous chondrites