Nearby Rocky World LHS 1140-b Reveals Helium Atmosphere in Habitable Zone
TL;DR Summary
Scientists detected a helium-dominated atmosphere around the rocky exoplanet LHS 1140-b, a planet in the habitable zone about 48 light-years away, marking the first direct evidence that such worlds can retain an atmosphere and potentially host liquid water and Earth-like life. The finding comes from WINERED observations on the Magellan telescope and suggests atmospheric escape can vary over time, while a nearby planet (LHS 1140-c) shows no atmosphere.
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- First atmosphere detected on a habitable-zone rocky world Center for Astrophysics | Harvard & Smithsonian
- Scientists Discover a Planet With the Most Earth-like Conditions Yet Time Magazine
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