一项研究发现，每年都有歌声从一群座头鲸那里东传到另一群那里，从澳大利亚到法属波利尼西亚。
A study finds that each year, songs spread from one group of humpback whales to another, moving eastward from Australia to French Polynesia.
仙女星系是距银河最近的巨型旋涡星系，它以其所在星座仙女座命名，同时又被称为M31，它是本星系群中最大成员。
The nearest major spiral galaxy to the Milky Way, Andromeda, named after its constellation and also known as M31, is the largest galaxy in the Local Group of Galaxies.
在这张有趣的望远镜影像中我们可以看见4个明显的星系，这个星系群被称为希克森44星系群，在狮子座方向上距离我们大约1亿光年远。
The four prominent galaxies seen in this intriguing telescopic skyscape are one such group, Hickson 44, about 100 million light-years distant toward the constellation Leo.
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