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Lhs 1140 B

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science1 hour ago•4 min saved

Nearby Rocky World LHS 1140-b Reveals Helium Atmosphere in Habitable Zone

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.

via 404 Media|

#atmosphere #exoplanet #habitable-zone

space16 hours ago•108 min saved

Helium Signal Confirms Atmosphere on Earth-Like Exoplanet in Habitable Zone

Astronomers directly detected helium in the atmosphere of the rocky, Earth-like exoplanet LHS 1140 b, making it the first confirmed atmosphere on a rocky world in the habitable zone. Using the WINERED spectrograph on the Magellan telescope, the planet’s transit spectra reveal an atmosphere that could potentially harbor liquid water with greenhouse effects. The 48‑light‑year‑away planet orbits a red dwarf and appears to have retained its atmosphere over billions of years, challenging assumptions about atmospheric loss around active stars. While not a life-detection, the finding marks a major advance in understanding habitability on rocky exoplanets and guides future observations.

via Space|

#atmosphere #exoplanets #habitable-zone

science-and-space2 years ago•3 min saved

Webb Telescope Finds Potential Ocean World 48 Light-Years Away

Scientists using the James Webb Space Telescope have identified the exoplanet LHS 1140 b, located 48 light years from Earth, as a potential ocean world. Initially thought to be a mini-Neptune, new observations reveal it is a rocky "super-Earth" with significant water content, possibly in liquid form. This makes LHS 1140 b one of the best candidates for finding liquid water on an alien world. Further research is needed to confirm the presence of an atmosphere and key gases like carbon dioxide.

via Phys.org|

#exoplanet #habitable-zone #james-webb-space-telescope