去年9月，印度宣布其月船1号航天器探测到产生水的化学反应，事情终于有了重大突破。

A major breakthrough came last September, when India announced that its Chandrayaan-1 craft had detected that chemical reactions producing water are still taking place.

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由于月球阻碍了与探测器的直接无线电通信，中国首先必须把一颗人造卫星送入月球轨道上的一个点，人造卫星可以从那里向航天器和地球发射信号。

Because the moon's body blocks direct radio communication with a probe, China first had to put a satellite in orbit above the moon in a spot where it could send signals to the spacecraft and to Earth.

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“信使”号将成为第一个绕水星飞行的航天器，它也是1975年“水手10号”接近水星后的第一次近水星探测活动。

Messenger will become the first spacecraft to orbit Mercury and the first mission there since Mariner 10 in 1975.

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