Heat could be retained as debris fall back into impact craters, creating an insulating blanket.

当碎片落回撞击坑时，热量可以被保留下来，形成隔热层。

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Skeptics have argued that a single impact would raise an asteroid's overall temperature very little and that asteroids would cool too quickly between impacts to accumulate much heat.

怀疑派认为，一次撞击只会使小行星的整体温度上升很小，而且小行星在两次撞击之间会迅速冷却，从而无法积聚大量热量。

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The intense heat of the impact would produce heat-shocked quartz in many types of rock.

撞击所释放的强烈高温会在许多类型的岩石中形成一种热冲击石英。

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The heat from the impact would have melted a lot of ice, releasing fresh water.

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It is still unclear whether the hydrogen represents the release of water by the heat of the impact, or whether it simply sheds light on the way that water is formed on the Moon from its chemical constituents.

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"These initial findings are very encouraging and echo our own results and our conclusion that the impact of urban heat islands on the overall global temperature is minimal, " Jones said in a statement.

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