Before revision: On September 12, 2023, NASA announced that their investigation into exoplanet K2-18 b revealed the possible presence of dimethyl sulfide, noting "On Earth, this is only produced by life."
After revision: On September 12, 2023, NASA announced that their investigation into exoplanet K2-18b revealed the possible presence of dimethyl sulfide, noting "On Earth, this is only produced by life."