LHS 1140b: The first atmosphere detected on a rocky habitable-zone exoplanet

For the first time, scientists have confirmed an atmosphere on a rocky exoplanet in the habitable zone of another star. Sarah Al-Ahmed is joined by Collin Cherubim, NASA Hubble Fellow at the University of Chicago, to discuss his team's detection of helium escaping from the super-Earth LHS 1140b, and what it reveals about how rocky worlds build, transform, and lose their atmospheres over time. His team's paper, published in the journal Science, marks a milestone decades in the making. Then Bruce Betts, chief scientist of The Planetary Society, joins for What's Up, where we dig into the very first exoplanet atmosphere ever detected and its surprising connection to this week's guest.

Discover more at: https://www.planetary.org/planetary-radio/2026-lhs-1140b

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