Atmosphere Astrobiology Habitable Zone Liquid Water Rocky Planets Earth-like Planets Potential Habitable Planets Extraterrestrial Life Potential Habitability Earth-size Planets Gliese 12 b Research and Discovery Comparative Planetology Planetary Atmospheres Planet Atmosphere Habitability Zone Habitability Factors Temperate Exoplanets Alien Life Detection Liquid Water Presence LHS 1140 b UV Radiation Effects Water Abundance Venus-like Exoplanets Venusian Conditions Wolf 359 HD 20794 d HD 20794d Liquid Water Requirements Water Carbon Signatures Milky Way Magnetic Fields Life Potential Potential Habitable Worlds Habitable Worlds Potentially Habitable Worlds Non-Habitable Statistical Analysis Potential for Life Biosignatures Habitable Planets Planetary Evolution Research Methods Solar Radiation Potential for human life Gliese 12b Atmospheres Space Exploration