Questions tagged [astrobiology]

The scientific study of the origin, evolution, distribution, and future of life in the universe.

The scientific study of the origin, evolution, distribution, and future of life in the universe.

30 questions
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Why must a planet be in a star's "habitable zone" to have life?

I have seen many articles that talk about a star's "habitable zone" as the ring around it which is just the right temperature for planets to have liquid water, which is necessary for life. My question is, why does a planet need to have liquid water…
Daniel
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Is it possible for humans to digest and live on food that isn't based on DNA or RNA?

Our bodies digest food using enzymes that have evolved to convert food here on Earth. Could we even possibly get nutrients from something we haven't evolved alongside? - Is it possible for humans to digest and live on food that isn't based on DNA or…
Jordan
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