Deep impact first visited comet Tempel 1 in 2005, crashing an impactor into the comet to help scan its composition from afar.

“深度冲撞”号于2005年第一次造访了彗星Tempel 1，为了分析该彗星的构成，它抛出了一个冲撞器。

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This technology was used on July 4, 2005, when Deep Impact smashed into the comet Tempel 1.

这个技术在2005年7月4号已经运用过了，就是深度撞击坦普尔一号彗星。

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Going back for another look at Tempel 1 will provide new insights on how comets work and how they were put together four-and-a-half billion years ago.

再次光顾彗星Tempel 1，将会提供很多新的信息，以帮助我们认识彗星如何运行以及她们在45亿年前是如何组成的？

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NASA's orbital-trajectory designers, will arrive at its target, comet Tempel-1, on July 4th.

ECONOMIST: Those space probes in full

Tempel 1 is up in the sky and in the--that's actually a fairly easy thing to see, because it's near Jupiter.

NPR: NASA 'Deep Impact' Probe Targets Comet