沿着此线大约三分之一处，你会发现一个模糊的物体，它的名称为M 50，是个散开星团。

About a third of the way along this line, you'll find a hazy object, an open star cluster, called M50.

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但最近的研究表明，这片星团的年龄只有1亿年——如果这是遗留下来的尘埃，那应该早就弥散开了。

But later studies found the cluster to be about 100 million years old — any dust left over from its formation would have dissipated long ago.

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但最近的研究表明，这片星团的年龄只有1亿年——如果这是遗留下来的尘埃，那应该早就弥散开了。

But later studies found the cluster to be about 100 million years old — any dust left over from its formation would have dissipated long ago.

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