hubble's law and the expanding universe
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哈勃–勒梅特定律(英语:hubble-lema tre law)又名指遥远 a
宇宙只有138亿年的历史,为何直径达到了930亿光年,这不矛盾吗?
哈勃–勒梅特定律(英语:hubble-lema tre law)又名指遥远 a target="
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