Methylated gases could be an unambiguous indicator of alien life

SEATTLE — Attention alien hunters: If you want to find life on distant planets, try looking for signs of toxic chemical cleanup. 

Gases that organisms produce as they tidy up their environments could provide clear signs of life on planets orbiting other stars, researchers announced January 9 at the American Astronomical Society meeting. All we need to do to find hints of alien life is to look for those gases in the atmospheres of those exoplanets, in images coming from the James Webb Space Telescope or other observatories that could come online soon.

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