What Is a Super-Earth? - Science@NASA
First Earth-sized planet found in 'habitable zone': NASA - Yahoo Singapore News
Kepler-186f : An Earth-sized planet in a habitable zone - Yahoo Singapore News
Uncovering details about exoplanets. - AZPM - news.azpm.org
Earth isn't the only planet with seasons, but they can look wildly different on other worlds - Yahoo News
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