这个疏散星团尤其古老，据测算有十亿岁了。
This open cluster is particularly ancient, estimated to be nearly one billion years old.
和疏散星团相比，星一般较老。
疏散星团，通常来讲，结构松散并且在几亿年中持续分散。
Open clusters, in general, are loosely bound and they disperse over hundreds of millions of years.
因此，一个疏散星团很少能够存活到它内部的某个成员变成行星状星云。
Hence, it is rare that an open cluster survives long enough for one of its members to form a planetary nebula.
在彗星下方的疏散星团分别为M47(右)与M46(左)。
Below the comet are open star clusters M47 (right) and M46 (left).
NGC2818是银河系中少数几个位于疏散星团内部的行星状星云之一。
NGC 2818 is one of very few planetary nebulae in our galaxy located within an open cluster.
在上面图中，你能找到：一彗星，一旋涡星系，一疏散星团和一超新星遗迹吗？
Can you find, in the above image, a comet, a spiral galaxy, an open star cluster, and a supernova remnant?
不过疏散星团NGC 869和 NGC 884 则是令人叹为观止的。
Open clusters NGC 869 and NGC 884, however, are doubly impressive.
最小的疏散星团里只有几个恒星，而最大的球状星团则由多达几百万颗恒星密集而成。
The smallest looser 'open clusters' have only a few stellar members, whilst the largest tightly bound' globular clusters' have as many as several million stars.
昴星团金牛星座中的疏散星团，由几百颗恒星组成，其中六颗星用肉眼可看到。
An open star cluster in the constellation Taurus, consisting of several hundred stars, of which six are visible to the naked eye.
它被称为疏散星团，因为它的成员恒星结构松散而且还有恒星在扩散离开星团。
It is called an open cluster because its stars are loosely bound and have started to spread out.
昴星团：金牛星座中的疏散星团，由几百颗恒星组成，其中六颗星用肉眼可看到。
An open star cluster in the constellation Taurus, consisting of several hundred stars, of which six are visible to the naked eye.
研究人员说，实际上，O型恒星的超新星爆炸可以认为是疏散星团迅速瓦解的原因。
In fact, the supernovae explosions of o stars could be the reason for a cluster's rapid disintegration, say researchers.
在观测深空天体时，它仍然有很出色的表现，它分解出了许多疏散星团中暗弱的星点。
On Deep-sky objects, the eyepiece continued to do quite well, showing many faint stars in open clusters.
恒星将取得最终胜利，接下来的10万年恒星将摧毁它们的创造之柱，结果形成一个新的疏散星团。
The stars will win in the end, destroying their pillars of creation over the next 100, 000 years, and resulting in a new open cluster of stars.
球状星团与疏散星团年龄相比要老得多，表明它们是在银河系形成初期形成的恒星系统。
It also shows that all globular clusters in our Galaxy are very old, much older than the oldest open clusters in the Galactic disk.
疏散星团动力学及形成过程的研究对于恒星动力学理论和银河系恒星形成理论具有重要意义。
Studies of the dynamics and formation process of open clusters are of great significance for stellar dynamics and star formation in the Galaxy.
介绍了白矮星宇宙纪年学研究的基本原理及其在银盘、球状星团、疏散星团以及银晕年龄确定方面的应用现状。
We also describe the basic principle of White Dwarf cosmochronology and its application in defining the age of the Galactic disk, globular clusters, open clusters and Galactic halo.
研究小组发现了B型星在星系中的分布甚至比更巨大的O型星还要广泛的事实，这为疏散星团的瓦解迅速提供了佐证。
The rapid disintegration of open clusters is reinforced by the fact that the team found that the B stars are significantly more spread in the galaxy than even the more massive O-type.
因为在仅仅数百万年之后，疏散星团开始消散，可能因为这个星团异常的年老，其内的一颗恒星已经演变到了行星状星云阶段。
Since open star clusters disperse after only a few hundred million years, this one must be exceptionally old to have one of its member stars evolve to the planetary nebula stage.
三个疏散星团，梅西耶天体M36、M37和M38在恒星密集的图片上部、五车五的左边排成线，是双筒望远镜熟悉的观测目标。
Three open star clusters, Charles Messier's M36, M37, and M38 line up in the dense star field above and left of Elnath, familiar to many binocular-equiped skygazers.
对疏散星团质量分层的有关问题做了简要的评述，包括空间质量分层和速度质量分层的表现形式和探测途径，质量分层形成机制的研究现状。
The mass segregation effects of open clusters, including spatial mass segregation and velocity mass segregation, are of great importance for studies of formation and evolution of clusters.
透过此窗口，一座灯火通明的工厂呈现眼前，一个疏散的恒星团正逐渐形成。
Through this window, a brightly-lit workshop appears where a whole open cluster of stars is being formed.
透过此窗口，一座灯火通明的工厂呈现眼前，一个疏散的恒星团正逐渐形成。
Through this window, a brightly-lit workshop appears where a whole open cluster of stars is being formed.
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