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Instead of using phosphorus, the bacteria uses arsenic for all its building blocks.
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Arsenic being poison, it sounds like the "life" forms are not food. Throw them back... next.
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As we pursue our efforts to seek signs of life in the solar system, we have to think more broadly, more diversely and consider life as we do not know it.
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Yeah, if we don't find life forms, we'll expand the definition until we do.
Eureka, I've found it!
That's the rock I tripped over yesterday.
That was yesterday, today it's a lifeform.
I can see expanding the markers for initial searching so they don't overlook something, but don't they have a certain list of qualifications, that constitute a lifeform, a definition of a lifeform? Like it has to grow, or reproduce, or even eat, I mean it doesn't have to write sonatas, but something.