If we did that then we may never be able to know if life previously existed on M... | Hacker News

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		nkrisc 4 months ago \| parent \| context \| favorite \| on: Common yeast can survive Martian conditions If we did that then we may never be able to know if life previously existed on Mars or not.

WalterBright 4 months ago [–]

Then we'll never know if we never visit Mars, because visiting Mars will contaminate it.

nkrisc 4 months ago | [–]

Which is why sample return missions are important. Better to risk contaminating a sample than the whole planet.

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