Rocky World LHS 1140b Might Harbor an Atmosphere, Scientists Say

1 min read
Source: CNN
Rocky World LHS 1140b Might Harbor an Atmosphere, Scientists Say
Photo: CNN
TL;DR

Scientists report promising signs that the rocky exoplanet LHS 1140b, about 49 light-years away in its star’s habitable zone, could have an atmosphere after detecting helium during a transit, a hint that it may have lost its hydrogen but retained helium and possibly other gases. If confirmed, this would make LHS 1140b the first known rocky planet in a habitable zone with an atmosphere, a major step for habitability studies. However, a 2025 follow-up failed to re-detect helium, so further observations with JWST and Hubble are planned to confirm the signal and search for other atmospheric components such as water.

Share this article

Want the full story? Read the original reporting

Read on CNN