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

里面大块实际上无可厚非，是撞核。

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

可以看到撞延伸出来，形成质长臂，就。

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

所以最初碰撞方向开始，她撞地球是偏心撞。

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

几小时后，看到撞质形成长臂由于引力崩塌成两大块。

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.

概念是...如果那里有一些其它体，并且最终撞地球，将从地球撞出所有地壳质...同样也有撞自身。

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.

所以当里面大块与地球碰撞时，她发生里，大多数铁随着碰撞实际上由地球收集起来了。