As a result of this contraction, the thin lunar crust bursts and large cracks appear.

由于这种收缩，薄薄的月球地壳崩裂，出现了巨大的裂缝。

At this time, the increased gravitational stress worsened the effects of the lunar crust, instigating breaks and moon quakes.

此时，不断增加的重力应力恶化了月球地壳的影响，引发了断裂和月球地震。

That should yield a detailed map of the lunar crust, and how its thickness varies from place to place.

这次探测任务应该会产生出一份详细的月球外壳图，以及各个地方的厚度如何变化。

He delivers a brief TED-style talk, while behind him we see a topographic model of what looks like blackened lunar crust.

他做了一个TED风格的简短演讲，而在他身后，我们看到了一个看似发黑的月壳地形模型。