The space agency's James Webb Space Telescope discovered a molecule called dimethyl sulphide, or DMS, on the distant planet, which on Earth can only be produced by life, according to a report from the BBC.
"On Earth, DMS is only produced by life. The bulk of it in Earth's atmosphere is emitted from phytoplankton in marine environments," University of Cambridge Profesor Nikku Madhusudhan, who led the research, told the BBC. More @ https://www.foxnews.com/us/nasa-detects-molecule-another-planet-only-produced-by-life
I think this discovery is neat and all, but of course there are reasons to doubt it. Not understanding the technology and how it's possible to come to these conclusions isn't an excuse for being dismissive of it (I don't know how to build a nuclear power plant, but they clearly exist).
Certainly I believe questioning the science is a big part of science at its heart. Dismissing it is bad; asking how and being skeptical is good.
Just like carbon dating -- and, well, everything else, methods and conclusions can always be sound but lead to the wrong conclusions too.
Always important to show the raw data with discoveries like this, and provide your models and methods used. Crowd criticism and viewership can either tear it apart or agree with the findings.
A spectrographic signature of a molecule is as unique as a fingerprint. They don't imitate one another. There is no answer to the question: What else can it be?
If I recall correctly, amino acids have been discovered in interstellar space as well. Does it prove the presence of life? No, it only proves that their formation does not depend on biology. And that may be all that this proves.