[Oatka]

An assortment of critters and microbes are scheduled to make a round-trip journey to Phobos as passengers aboard a Russian spacecraft . . .

Wonderful. If this thing has a problem and crashes, either on Phobos or Mars, they they infect that environment. If they survive, perhaps they'll mutate (even if they don't) and screw up any further investigation of life on Mars as we won't know which is which.

[DBCJR]

Wonderful. If this thing has a problem and crashes, either on Phobos or Mars, they they infect that environment. If they survive, perhaps they’ll mutate (even if they don’t) and screw up any further investigation of life on Mars as we won’t know which is which.

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Or they bring back infected organisms