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Kepler telescope: Earth-sized planets 'number 17bn'


Craig

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http://www.bbc.co.uk/news/science-environment-20942440


 


Astronomers say that one in six stars hosts an Earth-sized planet in a close orbit - suggesting a total of 17 billion such planets in our galaxy.


 


The result comes from an analysis of planet candidates gathered by Nasa's Kepler space observatory.


 


The Kepler scientists also announced 461 new planet candidates, bringing the satellites' total haul to 2,740.


 


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