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From Mars with love.

R S Young, D L Devincenzi

    Science (New York, N.Y.)
    |November 8, 1974
    PubMed
    Summary
    This summary is machine-generated.

    Returning Mars samples to Earth is feasible this decade. Sterilization reduces scientific value, while orbital quarantine is costly; however, phased approaches may ensure safe sample return.

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    Area of Science:

    • Planetary Science
    • Astrobiology
    • Space Mission Design

    Background:

    • Mars sample return missions are a key objective for planetary exploration.
    • Assessing the risks and benefits of sample return is crucial for mission planning.

    Purpose of the Study:

    • To evaluate the feasibility and implications of Mars sample return missions in the 1980s.
    • To analyze the trade-offs between mission cost, scientific value, and planetary protection.

    Main Methods:

    • Analysis of direct sample return versus sterilized return.
    • Evaluation of orbital quarantine strategies and their associated costs and risks.
    • Consideration of phased approaches involving partial sterilization and in-orbit study.

    Main Results:

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    • Direct sample return missions are feasible but raise back-contamination concerns.
    • Sample sterilization significantly diminishes scientific value, particularly for biological and organic analyses.
    • Earth-orbit quarantine is prohibitively expensive and logistically challenging for large sample quantities.

    Conclusions:

    • A phased approach, combining partial sterilization, orbital study, and ground analysis, may enable safe Mars sample return.
    • Further unmanned missions are recommended to better understand Martian biology and inform safety protocols for sample return.