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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?