JOURNAL ARTICLE

What is a presumed sign of life doing on a dead comet?

  • Published In: Sciencemag.org, 2024. P. N.PAG 1 of 3

  • Database: Applied Science & Technology Source Ultimate 2 of 3

  • Authored By: Cutts, Elise 3 of 3

Abstract

Scientists have discovered dimethyl sulfide (DMS), a molecule typically associated with living sources, on a lifeless comet. This finding challenges the molecule's usefulness as a biosignature and raises questions about a previous detection of it in the atmosphere of an alien planet. DMS is commonly produced by algae in Earth's oceans, making it a strong biosignature candidate for astronomers studying exoplanets. However, the presence of DMS on a dead comet suggests the need for caution when interpreting biosignatures and considering the possibility of alien life. Further research is needed to understand how DMS forms in space and whether comets could deliver significant amounts of it to planets. [Extracted from the article]

Additional Information

  • Source:Sciencemag.org. 2024/04, pN.PAG
  • Document Type:Article
  • Subject Area:Biology
  • Publication Date:2024
  • Accession Number:176928742
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