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Possible Life on Exoplanet K2-18b
May 4 , 2025
18 hrs 0 min
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- Astronomers have detected a possible biosignature, or signs of past or present life linked to biological activity, on an exoplanet named K2-18b.
- The team has detected the presence of dimethyl sulfide or DMS, and potentially dimethyl disulfide or DMDS within the atmosphere of K2-18b.
- On Earth, both the molecules are only produced by microbial life, typically marine phytoplankton.
- K2-18b, located 124 light-years from Earth, could be a Hycean world.
- This potentially habitable planet entirely covered in liquid water with a hydrogen-rich atmosphere.
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