Trappist-1 Star System

Trappist-1 III: The chances for life on Trappist-1 III are currently considered low because the James Webb Space Telescope has found it does not have an Earth-like atmosphere, which is crucial for life as we know it. While the planet is rocky, Mars-sized, and orbits in the star's habitable zone, the volatile red dwarf star Trappist-1 may have stripped away its atmosphere over time through intense solar flares.

Trappist-1 V (Nibaka): The chances for life on Trappist-1 V are low, although it orbits within the star's habitable zone. While Trappist-1 V is similar to size to Earth and rocky, its distance from the star might make it too cold for liquid water on its surface, and it might not have a sufficient atmosphere or internal heat to support life. 

Trappist-1 VI (Mireneaux): The chances for life on Trappist-1 VI are considered low but not zero, as the planet is likely a frozen world outside the optimal habitable zone, but its larger mass could allow it to retain an atmosphere necessary for liquid water, especially if volcanism or a thick hydrogen atmosphere creates a "Hycean world." While initial estimates placed it in the habitable zone, more recent models suggest it receives insufficient light, potentially leading to a frozen ocean surface. However, if it possesses a thick atmosphere or has significant volcanic activity to maintain greenhouse gases, the existence of liquid water and potential life is still a possibility.