Astronomy
The Search for Biosignatures in Exoplanet Atmospheres
Quick fact
The James Webb Space Telescope detected carbon dioxide and methane in the atmosphere of a distant planet, a first step toward finding biosignatures.
Why this is interesting
Imagine looking at a tiny dot of light and knowing it might be a world with life. How can we tell if a planet like Earth is out there, even from hundreds of light-years away?