First Atmosphere Confirmed on Habitable-Zone Rocky Exoplanet LHS 1140 b
On 17 July 2026, a Harvard-led team reported in Science the first unambiguous detection of an atmosphere—traced by escaping helium—around the Earth-sized, 48-light-year-distant exoplanet LHS 1140 b, marking the inaugural atmospheric confirmation for any rocky world inside a star’s habitable zone.