Second Earth-sized World Found in System's Habitable Zone – Exoplanet Exploration: Planets Beyond our Solar System
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Earth analog - Wikipedia
Other solar systems could cram in as many as seven Earth-like planets - CNET
Second Earth-sized World Found in System's Habitable Zone – Exoplanet Exploration: Planets Beyond our Solar System
Extrasolar planet, Definition, Detection, Properties, & Facts
The universe is teeming with fascinating super-Earth planets
Giant Exoplanets Are Potential 'Agents of Chaos' in Multiplanet Systems, Astronomers Say
Space Telescope Delivers the Goods: 2,200 Possible Planets » MIT Physics
Two new solar systems have been found relatively close to our own. One of them is just 160 light years from Earth and includes three planets that are remarkably similar in size
Is our solar system a cosmic oddity? Evidence from exoplanets says yes
