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'NASA's kepler spacecraft has begun its search for other earth-like worlds. the mission, which launched from cape canaveral, fla., on march 6, will spend the next three-and-a-half years staring at more than 100,000 stars for telltale signs of planets. kepler has the unique ability to find planets as small as earth that orbit sun-like stars at distances where temperatures are right for possible lakes and oceans.
"now the fun begins," said william borucki, kepler science principal investigator at nasa's ames research center, moffett field, calif. "we are all really excited to start sorting through the data and discovering the planets."'
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