First Confirmed Atmosphere on a Rocky Habitable Zone Exoplanet

Astronomers have for the first time detected a confirmed atmosphere around a rocky exoplanet, LHS 1140 b, located within its star's habitable zone, marking a significant step in the search for life beyond Earth.

The top 3

  1. K2-18 b: First Confirmed Atmosphere: K2-18 b, a sub-Neptune exoplanet 124 light-years away, has a confirmed atmosphere containing methane and carbon dioxide, suggesting it could be a 'Hycean' world with a hydrogen-rich atmosphere over a water ocean.
  2. TRAPPIST-1e: Prime Water World Candidate: TRAPPIST-1e is one of seven Earth-sized exoplanets orbiting an ultracool dwarf star, located in its habitable zone, making it a strong candidate for potentially hosting liquid water on its surface.
  3. Proxima Centauri b: Closest Habitable Zone: Proxima Centauri b, orbiting the closest star to our Sun, is a rocky exoplanet located within its star's habitable zone, though the presence and stability of its atmosphere remain uncertain due to stellar activity.

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