Scientists Discover Possible Signs of Life on Distant Exoplanet K2-18 b

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In a groundbreaking study, scientists utilizing the James Webb Space Telescope have detected what they describe as the strongest signs yet of potential life on exoplanet K2-18 b, located approximately 124 light-years from Earth in the constellation Leo. Researchers found chemical signatures of two gases, dimethyl sulfide (DMS) and dimethyl disulfide (DMDS), which are typically produced by biological processes on Earth, particularly by marine microorganisms, according to lead author Nikku Madhusudhan from the University of Cambridge.

K2-18 b, categorized as a "hycean world," is situated in the habitable zone of its star, where conditions could allow for liquid water, a crucial ingredient for life. Researchers emphasized caution, noting that these findings indicate a possible biosignature but not conclusive evidence of life. Madhusudhan remarked that the data is a significant development in astrobiology, yet additional observations and analyses are necessary to confirm these results. Other experts, including Christopher Glein from the Southwest Research Institute, echoed the need for careful validation of the data before reaching definitive conclusions regarding extraterrestrial life.

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