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Related Experiment Videos

Comet 81P/Wild 2 under a microscope.

Don Brownlee1, Peter Tsou, Jérôme Aléon

  • 1Department of Astronomy, University of Washington, Seattle, WA 98195, USA. brownlee@astro.washington.edu

Science (New York, N.Y.)
|December 16, 2006
PubMed

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Summary
This summary is machine-generated.

The Stardust mission returned comet samples revealing a mix of ancient presolar and inner solar system materials. This discovery confirms large-scale mixing occurred during the solar system's formation.

Area of Science:

  • Cosmochemistry
  • Planetary Science
  • Astrophysics

Background:

  • The Stardust mission collected samples from comet 81P/Wild 2.
  • Cometary dust provides insights into early solar system conditions.

Purpose of the Study:

  • To analyze the composition and origin of cometary particles.
  • To understand the processes involved in solar system formation.

Main Methods:

  • Laboratory analysis of returned comet samples.
  • Microscopy and chemical analysis of dust grains.

Main Results:

  • Cometary samples contain unequilibrated materials of both presolar and solar system origin.
  • Abundant large silicate grains, including high-temperature minerals, were found.

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  • These minerals suggest formation in the inner solar nebula.

    • Conclusions:

    • Cometary composition reflects a complex history of material mixing.
    • The presence of inner solar system materials in comets supports grand-scale mixing during solar system formation.