Abstract
As space exploration advances towards the planetary bodies in the Solar system, the issue of contamination and its impact on the search for life becomes more important. Scientific categorization concepts such as the Plausibility of Life (POL) rating only describe the likelihood of finding conditions suitable for the formation of life on celestial bodies not taking contamination issues into account, while other policy-driven categorizations such as the Committee on Space Research (COSPAR) and their Planetary Protection Policy mainly focus on aiming to avoid the “harmful contamination” to Earth and other celestial bodies, without thinking of the plausibility of life.
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