The inner clump of the impacter material is actually composed overwhelmingly of the impacter's core.

里面的大块实际上无可厚，击者的核。

After a couple hours we see that this arm of impacter material has collapsed gravitationally into two large clumps.

几个小时后，看到击物质形的长臂由于引力崩塌两个大块。

The idea was...if there was some other body there and it finally crashes into the Earth, it blows off all this crustal material from the Earth...As well as from the impacter itself.

这个...如果那里有一些其它的物体，并且最终击地球，将从地球出这所有的地壳物质...同样也有击者自身。

So initially the impacter came in from this direction, it hit the Earth with an off-center collision.

所以最初碰在这个方向开始，她击地球个偏心的击。

And you can see the impacter has been stretched out into this long arm of material, right here.

可以看到击延伸出来，形物质的长臂，就在这。

So then when this inner clump recollides with the Earth, and it happens right there, the vast majority of the iron that came in with the impacter is actually accumulated by the Earth.

所以当这个里面的大块与地球碰时，她发生在这里，大多数的铁随着碰实际上由地球收集起来了。