陨石球粒

They plan to the next step in-depth study of the comet dust grains in the meteorite ball formation period.

他们计划下一步深入研究彗星尘埃中陨石球粒的形成时期。

To reach back, you need to look in the dust grains in chondrites, rather than at the chondrules.

如果是追溯太阳系形成之前，你需要研究球粒状陨石中的灰尘颗粒，而不是陨石球粒。

Looking at these isotopes allows the chondrules to be dated, and they were formed 4.56 billion years ago.

观察这些同位素可以估算出陨石球粒的年龄，他们是在45.6亿年前形成的。

Work out how old the oldest chondrules are, and you know when the sun ignited.

得出最老的陨石球粒的年龄，你就可以知道太阳是什么时候开始燃烧的。

Once a merged mass of chondrules and dust got big enough, things started to happen.

一旦陨石球粒和灰尘聚合的数量变的足够大，有些事情开始发生了。

Local concentrations of chondrules were drawn together by gravity and, when they encountered each other, often merged.

局部聚集的陨石球粒由于引力而相互吸引，当他们碰到一起时，往往合为一体。

That chondrules formed in such quantities suggests that the heating which created them was widespread.

这么大量的陨石球粒的形成说明能使它们形成的热量的范围很大。

Like the chondrules themselves, most dust grains were created in the early solar system—in this case by bigger objects grinding against each other.

和陨石球粒他们一样，大部分灰尘创造于太阳系初期——这样的话，它们是较大物体相互摩擦产生的。

That means they contain spherical nodules a few millimetres across, known as chondrules.

这意味着它们含有直径数毫米的球形岩球（或叫做陨石球粒， chondrule ）。

Chondrules are frozen droplets of once-liquid rock.

陨石球粒是由一些曾经液化的石头凝固而成的小滴。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。