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About: Interplanetary contamination     Goto   Sponge   NotDistinct   Permalink

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Interplanetary contamination refers to biological contamination of a planetary body by a space probe or spacecraft, either deliberate or unintentional. There are two types of interplanetary contamination: * Forward contamination is the transfer of life and other forms of contamination from Earth to another celestial body. * Back contamination is the introduction of extraterrestrial organisms and other forms of contamination into Earth's biosphere. It also covers infection of humans and human habitats in space and on other celestial bodies by extraterrestrial organisms, if such habitats exist.