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False Positives, False Negatives; The World of Distant Biosignatures Attracts and Confounds

29 Jan 2018, 18:55 UTC
False Positives, False Negatives;  The World of Distant Biosignatures Attracts and Confounds NASA/JPL-Caltech

What observations, or groups of observations, would tell exoplanet scientists that life might be present on a particular distant planet?

The most often discussed biosignature is oxygen, the product of life on Earth. But while oxygen remains central to the search for biosignatures afar, there are some serious problems with relying on that molecule.

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