美国航天局的科学家曾希望这个撞击会抛起六英里高的月球尘埃和碎片云，通过对其扫描，可以找到结冰水的证据。
Nasa scientists had anticipated that the impact would throw up a six-mile-high cloud of lunar dust and rock which could be scanned for evidence of frozen water.
最近有线索表明，至少部分夜光云是由航天飞机上排出的水蒸气结冰所导致的。
Recent evidence indicates that at least some noctilucent clouds result from freezing water exhaust from Space Shuttles.
最近有线索表明，至少部分夜光云是由航天飞机上排出的水蒸气结冰所导致的。
Recent evidence indicates that at least some noctilucent clouds result from freezing water exhaust from Space Shuttles.
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