Rocky worlds may orbit our nearest star neighbours

IF WE ever travel to the nearest solar system, it would be good to know the kind of planets to expect. Now we have the best hint yet. The Alpha Centauri dual star system is thought to host rocky Earth-mass worlds, but this assumes they could form in the turbulent conditions associated with the opposing gravitational tugs of paired star systems. To find out, Jian Ge of the University of Florida in Gainesville and colleagues built a computer simulation of the system,
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