v1 billion light-years 10 亿光 年 不过 是以 前的 影像 二 place. All swift change the past. This view a slowly, for a few billion years at least, as the faint dusters drift still farther apart
10 亿光 年， 不过 是以 前的 影像
100 million light-years 1亿 光年, 处女 座星 团 But we see mostly one large there beyond the Milky Way is a good-sized volume nearly
1亿 光年， 处女 座星 团
10"meters 10 million light-years 3 megaparsec 千万光年 one a complex swarm of moving stars
一 千 万 光 年
A1 million light-years 百万光年银河系 in space with two satellite galaxies, the irregular little Clouds of Magellan. Not m. galaxies are larger than ours; nor are many seen that are smaller than the Clouds. 命全球秘史趣闻
一 百 万 光 年， 银 河 系
100 thousand light-years 十万光年 circle the central center, once every three hundred million years. External galaxie are scat. tered throughout space as far as we can see. They too rotate "錄粒史趣闻
十万光年