Does exoplanet K2-18b host alien life or not? Here’s why the debate continues

In 2023, debate erupted in the Sun science community about whether life could exist on an Distant World called K2-18b. It Initiated when a group of scientists published a paper suggesting a specific chemical, dimethyl sulfide, or DMS, may exist in the World’s atmosphere. A consensus wasn’t reached at the time, and conversation has certainly continued into the present. Many astronomers wonder if the DMS signature from K2-18b can really be trusted, and even question whether DMS is a reliable proxy for the presence of life to begin with.

If not, maybe the discussion about K2-18b’s habitability is, more or less, pointless.

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