The journey of these emissions begins deep underground in the earth's core.

这些排放物来自于地核深处。

And the molten portion of the earth's core is a place where these motions take place and it can set up a magnetic field.

地核的熔融部分是这些运动发生的地方，它可以形成磁场。

Devils Tower is a relic of the past, when the molten rock of the earth's core forced its way to the surface to form the throat of a volcano.

魔鬼塔是过去的遗迹，当地球核心的熔岩被迫到达地面时，形成了一座火山的喉咙。

And if an enormous asteroid the size of the earth were to hit, the planet would be completely obliterated, leaving nothing but the earth’s core and creating a new asteroid belt between

如果一颗地球大小的巨大小行星撞击地球， 地球将被彻底毁灭，只留下地核， 并在两者之间形成一个新的小行星带。