[天]疏散星团，[天]银河星团

疏散星团，银河星团

open clusters───疏散星团

gene cluster───[遗]基因簇，一组相同或者相似的基因

open letter───n.公开信

tone cluster───音群

open a letter───拆信

tone clusters───音群

gear cluster───[机]齿轮组

open court───[法]公开法庭

open courts───[法]公开法庭

This open cluster is particularly ancient, estimated to be nearly one billion years old.───这个疏散星团尤其古老, 据测算有十亿岁了.

Most of the V is formed by an open cluster of stars, called the Hyades.───这个V字型大致是由一串星星组成的, 它们叫毕星云.

Explanation : The great variety of star colors open cluster underlies its name: The Jewel Box.───这个星光灿烂、五彩缤纷的疏散星团,称之为“珠宝盒”真是名副其实.

Comparing with the open cluster their stars are older.───和疏散星团相比，星一般较老。

The open cluster contains hundreds of stars and spans about 65 light years across.───这个疏散星团有数百颗成员星,跨度大约为65光年.

of the V is formed by an open cluster of stars, called the Hyades.───这个V字型大致是由一串星星组成的，它们叫毕星云。

Inside the nebula lies an open cluster of bright young stars designated NGC 2244.───于星云中躺著一群由明亮年轻恒星组成的疏散星团,名为NGC2244.

This could open cluster with too little mass to gravitationally hold together for very long.

Most of the V is formed by an open cluster of stars, called the Hyades.

The Pleiades nebulosity is caused by a chance encounter between an open cluster of stars and a molecular cloud.

The most spectacular binocular object in Gemini is the open cluster M35.

The open cluster M50 is less spectacular, but easy to locate.

I mention it here because it and Sirius show the way to the open cluster M50 in Monoceros.

This digitally fused panorama was captured earlier this month from Yellowknife, Northwest Territories, Canada, and includes the Pleiades open cluster of stars just to the upper right of the Moon.

The sparse open cluster M10 lies near Gamma Scuti.