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Earlier this year the scientists of NASA's Kepler mission announced that their planet-hunting space telescope had identified more than 1,200 possible exoplanets (worlds orbiting stars other than our own sun) in its first few months on the job.
The potential planets Kepler has located range from worlds a bit smaller than Earth all the way up to giants several times the size of Jupiter. Similarly, some of the host stars are several times as large as the sun whereas some are much smaller....
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