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Simulation of the Planetary Interior Differentiation Processes in the Laboratory
Published on: November 15, 2013
La estructura interna diferenciada de Europa: inferencias de dos encuentros con Galileo
J D Anderson1, E L Lau, W L Sjogren
1Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109-8099, USA.
Science (New York, N.Y.)
|May 23, 1997
Resumen
Los datos de la nave espacial Galileo revelan que Europa se encuentra en Europa.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- La geofísica es la geofísica.
- Astrobiología Astrobiología.
Sus antecedentes:
- Europa, la luna de Júpiter, es un candidato principal para la vida extraterrestre.
- Comprender la estructura interna de Europa es crucial para evaluar su habitabilidad.
Objetivo del estudio:
- Para determinar el campo gravitacional externo de Europa.
- Para inferir la estructura y composición interna de la luna.
Principales métodos:
- Análisis de los datos Doppler de la onda portadora de radio de la nave espacial Galileo.
- Medidas durante dos encuentros de Europa (E4 y E6).
Principales resultados:
- Europa posee una gruesa capa externa (100-200 km) de hielo de agua y líquido.
- El interior profundo de la Luna tiene una densidad superior a 4000 kg/m3.
- Un núcleo metálico (radio ~40% del de Europa) rodeado por un manto rocoso (30003500 kg/m3) es una posible configuración interna.
Conclusiones:
- La estructura de Europa sugiere un océano subterráneo bajo una corteza helada.
- La presencia de un núcleo metálico se apoya en la posibilidad de un campo magnético.
- Estos hallazgos tienen implicaciones para el potencial de Europa para albergar vida.
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