Helium escaping from atmosphere of nearby rocky exoplanet in a habitable zone

Researchers have observed helium leaking from the atmosphere of a nearby rocky exoplanet. The planet orbits within the habitable zone of its host star. Helium escape was identified using spectroscopic measurements. The finding suggests the planet’s atmosphere is undergoing active loss. The study provides insight into atmospheric evolution of Earth‑like worlds. Data were collected by space‑based telescopes observing the star‑planet system. Results may inform models of habitability and planetary climate stability. Ongoing observations aim to track the rate of atmospheric escape over time.