Overview of the Mars Pathfinder mission and assessment of landing site predictions.
Science
; 278(5344): 1743-8, 1997 Dec 05.
Article
em En
| MEDLINE
| ID: mdl-9388167
ABSTRACT
Chemical analyses returned by Mars Pathfinder indicate that some rocks may be high in silica, implying differentiated parent materials. Rounded pebbles and cobbles and a possible conglomerate suggest fluvial processes that imply liquid water in equilibrium with the atmosphere and thus a warmer and wetter past. The moment of inertia indicates a central metallic core of 1300 to 2000 kilometers in radius. Composite airborne dust particles appear magnetized by freeze-dried maghemite stain or cement that may have been leached from crustal materials by an active hydrologic cycle. Remote-sensing data at a scale of generally greater than approximately 1 kilometer and an Earth analog correctly predicted a rocky plain safe for landing and roving with a variety of rocks deposited by catastrophic floods that are relatively dust-free.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Marte
/
Meio Ambiente Extraterreno
Tipo de estudo:
Prognostic_studies
/
Risk_factors_studies
Idioma:
En
Revista:
Science
Ano de publicação:
1997
Tipo de documento:
Article
País de afiliação:
Estados Unidos