Dimethyl Sulfide on K2-18b: Webb’s Potential to Verify a Biosignature—But Current Data Fall Short
To the point
Shang-Min Tsai and colleagues contend that Webb could help test a tentative dimethyl sulfide signal on the hydrogen-rich world K2-18b, but current data are unlikely to confirm DMS because the signal overlaps with methane and would require about 20 times Earth’s DMS production to be detectable, though future infrared-capable instruments might isolate DMS if life on K2-18b produces enough.
