What is Alpha Centauri hiding? Searches for Earth-like planets ramp up around our nearest stellar ne

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Alpha Centauri, a three-star system just 4 light-years away that is the sun's nearest neighbor, ought to be a great place to look for Earth-like planets. But last week, at a meeting of the European Astronomical Society (EAS) here, astronomers lamented the way the system has thwarted discovery efforts so far—and announced new efforts to probe it. "It's very likely that there are planets," says Pierre Kervella of the Paris Observatory in Meudon, France, but the nature and positions of the stars complicate the search. "It's a little frustrating for planet searchers."




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