By A Mystery Man Writer
A second Earth-sized world is found in habitable zone of a star with three previously known planets.
Second Earth-sized World Found in System's Habitable Zone
NASA discovered Earth-size planet that could be habitable
EXOPLANET DISCOVERIES, THE SEARCH FOR EXTRATERRESTRIAL LIFE, AND AN ALL-POWERFUL BEING, by Prince Abbey
Second Earth-sized World Found in System's Habitable Zone
Kepler Mission Discovers Two New Planetary Systems With 'Habitable
Bad Astronomy Two Earth-sized planets found in a nearby star's
A Second Earth-Like Planet May Exist In The Solar System, Say Scientists, Planet
NASA announces new 'super-Earth': Exoplanet orbits in 'habitable
18 Earth-sized exoplanets discovered
TESS has Found A Second Earth-Sized World in This System. Exoplanet Science is Maturing - Universe Today
News & Features – Exoplanet Exploration: Planets Beyond our Solar System
A Second Earth-Like Planet May Exist In The Solar System, Say Scientists, Planet
Smithsonian Insider – Astronomers discover two water worlds
NASA Just Discovered Another Planet Just Like Earth, Colonization
Overview Planet Types – Exoplanet Exploration: Planets Beyond our Solar System