Summary: Kepler scientists have announced 461 new planet candidates, bringing the
satellites' total haul to 2,740. Based on this updated data, astronomers estimate that for every six stars that astronomers find, at least one will have a earth-sized planet in a close orbit. This brings the potential for earth-sized planets up to about 17 billion in our galaxy.
BBC News: http://www.bbc.co.uk/news/science-environment-20942440
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