It is estimated that one-third of the stars in the MilkyWay are either binary or part of a multiple-star system.
据估计银河系中三分之一的恒星要么是双星要么是多恒星系统的一部分。
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If our solar system holds so many remarkable moons, then what strange satellite worlds might we find among the billions of planetary systems in the MilkyWay?