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Second Earth-sized World Found in System's Habitable Zone
Second potentially habitable Earth-size planet found orbiting …
Nasa announces discovery of 'second Earth' in deep space
Scientists have discovered a theoretically habitable, Earth-size planet
Astronomers find 2nd Earth-size planet in intriguing alien solar …
Discovery Alert: A 'Super-Earth' in the Habitable Zone
Discovery Alert: A ‘Super-Earth’ in the Habitable Zone - Science@NASA
Earth-Size, Habitable Zone Planet Found Hidden in Early NASA …
NASA’s Kepler Mission Discovers Bigger, Older Cousin to Earth
NASA satellite discovers second Earth-sized planet in habitable …