Astronomy
The Detection of Biosignature Gases in the Atmosphere of K2-18b
Quick fact
Using the James Webb Space Telescope, scientists detected methane and carbon dioxide in the atmosphere of K2-18b, and possibly even dimethyl sulfide—a gas that, on Earth, is only produced by living organisms like marine plankton.
Why this is interesting
What if there was a planet where the sky smelled like the ocean, and life might be drifting in the clouds? Astronomers think they've found such a world.