半人马座阿尔法星：人马座中的聚星，其三个组成部分是星座中最亮的部分，距地球4.4光年。
A multiple star in Centaurus whose three components represent the brightest object in the constellation, 4.4 light-years from Earth.
一般来讲，一个星座中最亮的星编号为α，作为它学术名称的一部分；
Usually, the brightest star in a constellation is has "alpha, " the first letter of the Greek alphabet, as part of its scientific name.
但是毕宿五是个例外，它是整个毕宿星云中最亮的星星。它与其它的星星的距离就近多了，只有65光年，而且它不是这个星星串中的一部分。
The exception is Aldebaran, the brightest star of the V-shaped Hyades, which at about 65 light years is much closer and not part of the cluster.
虽然他使用的是当时最大的望远镜，但他还是只看到星云的最亮部分，就是图中的左下部分。
Despite using one of the largest telescopes in the world at the time, Herschel seems to have only noted the brightest part of the cloud, seen here towards the lower left.
虽然他使用的是当时最大的望远镜，但他还是只看到星云的最亮部分，就是图中的左下部分。
Despite using one of the largest telescopes in the world at the time, Herschel seems to have only noted the brightest part of the cloud, seen here towards the lower left.
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