Finding such an instrument required three big breakthroughs.

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He described the restructuring as "like finding a broken Stradivarius cello and building a new semi-electric instrument without spoiling the design".

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NASA's issuing back pats all round, as finding Kepler-37b has highlighted "the precision of the Kepler instrument" (although admittedly, the star's behavior was favorable), and suggests there are many more humble worlds of similar size awaiting our detection.

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