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    Planning considerations related to the organic contamination of martian samples and implications for the Mars 2020 rover

    Access Status
    Fulltext not available
    Authors
    Summons, Roger
    Sessions, A.
    Allwood, A.
    Barton, H.
    Beaty, D.
    Blakkolb, B.
    Canham, J.
    Clark, B.
    Dworkin, J.
    Lin, Y.
    Mathies, R.
    Milkovich, S.
    Steele, A.
    Date
    2014
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Summons, R. and Sessions, A. and Allwood, A. and Barton, H. and Beaty, D. and Blakkolb, B. and Canham, J. et al. 2014. Planning considerations related to the organic contamination of martian samples and implications for the Mars 2020 rover. Astrobiology. 14 (12): pp. 969-1027.
    Source Title
    Astrobiology
    DOI
    10.1089/ast.2014.1244
    ISSN
    1531-1074
    URI
    http://hdl.handle.net/20.500.11937/47426
    Collection
    • Curtin Research Publications
    Abstract

    © Copyright 2014, Mary Ann Liebert, Inc. Data gathered during recent NASA missions to Mars, particularly by the Rovers Spirit, Opportunity, and Curiosity, have provided important insights into the past history and habitability of the Red Planet. The Mars science community, via input through the National Research Council (NRC) Planetary Science Decadal Survey Committee, also identified the prime importance of a Mars sample return (MSR) mission to further exploration of the Red Planet. In response, the Mars 2020 Mission (Mars 2020) Science Definition Team (SDT) (Mustard et al., 2013) was chartered by the NASA Mars Exploration Program to formulate a new rover mission that would take concrete steps toward an eventual sample return. The SDT recommended that the 2020 rover should select and cache scientifically compelling samples for possible return to Earth. They also noted that organic contamination of the samples was a significant and complex issue that should be independently investigated by a future committee. Accordingly, NASA chartered the Mars 2020 Organic Contamination Panel (OCP). The OCP was charged with evaluating and recommending sample contamination requirements for the proposed Mars 2020. A further task was to assess implementation approaches in support of the investigation of broad scientific questions concerning the history and habitability of Mars. Central to these objectives would be the ability to reliably differentiate indigenous martian organic molecules from terrestrial contamination in any future samples returned from Mars. Early on during its deliberations, the OCP recognized that the scientific and planetary protection (PP) objectives of MSR are intimately linked, in that both rely heavily on measurements of organic molecules in the returned samples. In each case, a key aspect of the problem is being able to recognize and interpret organic molecules as indigenous to Mars against a potential background of Earthsourced contamination. It was within this context that the OCP committee considered the structure for a set of measurement goals related to organic molecules in the returned samples that would be of common interest to science and PP. The following is a summary of the most significant findings of the OCP regarding organic geochemical measurements that would be shared for both science and PP in relation to potential future MSR.

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