Astronomers Detect First Atmosphere on Earth-Sized Planet in a Habitable Zone

The Irish Times—Scientists have confirmed the first detection of an atmosphere surrounding an Earth-sized exoplanet located in its star's habitable zone, a major milestone in the search for potentially habitable worlds. The planet was found to have helium escaping from its atmosphere, which researchers used as a key detectable signature of atmospheric presence. Astronomers described the discovery as 'beautiful,' calling it a significant step toward understanding whether rocky planets in habitable zones can sustain conditions for life. Further observations are needed to determine the atmosphere's full composition.

• The Irish Times — ‘It’s beautiful’: Astronomers find atmosphere on a nearby Earth-like planet
• BBC — Science — First atmosphere found on Earth-like planet in habitable zone of distant star
• Hacker News — Escaping helium was the specific atmospheric signature scientists detected to confirm the planet has an atmosphere