Computer Science
Scientific paper
Jan 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000neas.work....8c&link_type=abstract
Near-Earth Asteroid Sample Return Workshop, p. 8
Computer Science
Containment, Protection, Assessments, Contamination, Sterilization, Radiation Dosage
Scientific paper
Several criteria may be applied to assess whether a given small body, or portion of that small body, is a candidate for planetary protection considerations. These include thermal regime, radiation exposures, and presence or absence of water, ices, and organics. For maximum protection, the back-contamination chain to Earth must be broken via some method, such as aseptic sample acquisition, aseptic transfer, or exterior sterilization. In-space sterilization of samples is also an option, albeit not an attractive one because of some compromises to the scientific integrity of the sample. Containment options involve methods of sealing, multiple safeguards to impede the release of materials, emergency sterilization techniques, and of course making the system robust to entry and impact. All of these techniques are implementable, but at varying cost to the mission and with different limitations on science. The implementation approach should be commensurate with the assessment of the planetary protection risks for a given body.
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