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El cometa 81P/Wild 2 bajo un microscopio
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
Resumen
La misión Stardust devolvió muestras de cometas que revelaron una mezcla de antiguos materiales del sistema solar presolar e interior. Este descubrimiento confirma que se produjo una mezcla a gran escala durante la formación del sistema solar.
Área de la Ciencia:
- Cosmoquímica es la cosmoquímica.
- Ciencias planetarias Ciencias planetarias.
- La astrofísica es la astrofísica.
Sus antecedentes:
- La misión Stardust recogió muestras del cometa 81P/Wild 2.
- El polvo cometario proporciona información sobre las primeras condiciones del sistema solar.
Objetivo del estudio:
- Para analizar la composición y el origen de las partículas cometarias.
- Comprender los procesos involucrados en la formación del sistema solar.
Principales métodos:
- Análisis de laboratorio de muestras de cometas devueltas.
- Microscopia y análisis químico de los granos de polvo.
Principales resultados:
- Las muestras de cometas contienen materiales desequilibrados de origen presolar y del sistema solar.
- Se encontraron granos de silicato grandes y abundantes, incluidos minerales de alta temperatura.
- Estos minerales sugieren la formación en el interior de la nebulosa solar.
Conclusiones:
- La composición de los cometas refleja una compleja historia de mezcla de materiales.
- La presencia de materiales del sistema solar interior en los cometas apoya la mezcla a gran escala durante la formación del sistema solar.
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