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Potential Atmosphere Detected on Habitable-Zone Exoplanet LHS 1140b

An artist’s concept of rocky planets LHS 1140b and LHS 1140c. Image credit: Melissa Weiss / Harvard & Smithsonian’s Center for Astrophysics.

Using spectral data from the Magellan Clay telescope at Las Campanas Observatory, astronomers detected helium escaping from LHS 1140b, a rocky exoplanet that orbits in the habitable zone of the nearby low-mass star LHS 1140.

The post Potential Atmosphere Detected on Habitable-Zone Exoplanet LHS 1140b appeared first on Sci.News: Breaking Science News.

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Barnard’s Star Planetary System May Be Filled with Water-Poor Rocky Worlds

An artist’s illustration of exoplanets orbiting Barnard’s star. Image credit: International Gemini Observatory / NOIRLab / NSF / AURA / P. Marenfeld.

A new analysis suggests the four sub-Earth exoplanets orbiting Barnard’s star -- the Sun’s nearest single-star neighbor -- are likely packed with the deep-Earth mineral periclase, stripped of their atmospheres and far too hostile to support life.

The post Barnard’s Star Planetary System May Be Filled with Water-Poor Rocky Worlds appeared first on Sci.News: Breaking Science News.

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