Would you be excited if you discovered extra-terrestrial flatulence?
NASA discovered dimethyl sulfide on planet K2-18 b, so far away that light takes 120 years to reach Earth from there.
The discovery is significant because there is no known nor theorized natural process by which this chemical can be created other than by biological means (it's literally the chemical that makes cabbage smell stinky): https://www.nasa.gov/goddard/2023/webb-discovers-methane-carbon-dioxide-in-atmosphere-of-k2-18b
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