Overview of the Mars Pathfinder mission and assessment of landing site predictions.

نویسندگان

  • M P Golombek
  • R A Cook
  • T Economou
  • W M Folkner
  • A F Haldemann
  • P H Kallemeyn
  • J M Knudsen
  • R M Manning
  • H J Moore
  • T J Parker
  • R Rieder
  • J T Schofield
  • P H Smith
  • R M Vaughan
چکیده

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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عنوان ژورنال:
  • Science

دوره 278 5344  شماره 

صفحات  -

تاریخ انتشار 1997