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Looking for Earth’s cousins: ‘biosignatures’ in exoplanet atmospheres

18 Feb 2020, 15:01 UTC
Looking for Earth’s cousins: ‘biosignatures’ in exoplanet atmospheres
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Scientists have discovered thousands of exoplanets. One way to search for signs of life on these worlds is to probe exoplanet atmospheres for "biosignatures" -- quirks in chemical composition that are telltale signs of life.

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