Hubble Detects Massive Cyclones in Atmosphere of WASP-121b

Want to Find Life? See What's Missing in an Atmosphere

Researchers propose that if a terrestrial planet has substantially less carbon dioxide in its atmosphere compared to other planets in the same system, it could be a sign of liquid water — and possibly life — on that planet’s surface.

The Atmosphere of an Exoplanet Reveals Secrets About Its Surface