本星系群
本星系群（英文：Local Group），是包括地球所处个银河系在内个一群星系。箇组星系群包含大约超过50个星系，渠个质心垃拉银河系搭仙女座星系之间个某处。本星系群中个全部星系覆盖一块直径大约1000万光年个区域，本星系群个波速频散为61±8 km/s。
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