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.

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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.

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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.

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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.

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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.

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