The part of NASA that is charged with this mission - https://sma.nasa.gov/sma-disciplines/planetary-protection https://sma.nasa.gov/sma-disciplines/planetary-pr

The part of NASA that is charged with this mission - https://sma.nasa.gov/sma-disciplines/planetary-protection https://sma.nasa.gov/sma-disciplines/planetary-protection From there, https://journals.asm.org/doi/10.1128/aem.33.2.379-384.1977 https://journals.asm.org/doi/10.1128/aem.33.2.379-384.1977 is "Microbiological profiles of the Viking spacecraft" Note things like: > Approximately 1,300 colonies were picked from culture plates, identified, lypholipized, and stored for future reference. About 75% of all isolates were microorganisms considered indigenous to humans; the remaining isolates were associated with soil and dust in the environment. So that if we do encounter that particular strain on Mars, we'll know its from Earth. --- One that's on the interesting side and has more than just an available abstract: Europa Clipper planetary protection probabilistic risk assessment summary https://www.sciencedirect.com/science/article/abs/pii/S0032063320303524?via%3Dihub https://www.sciencedirect.com/science/article/abs/pii/S00320...