同位素地质年代学是测量年龄，利率，和历史或行星的地质资料的一门科学，运用这些见解的过程和现象可以了解地球与行星科学系。

Geochronology is the science of measuring ages, rates, and histories of geologic or planetary materials, and using these insights to understand processes and phenomena in earth and planetary science.

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比较行星地质学是人类认识自然和人类本身形成与演化的前缘学科，是实现太阳系探测三大科学目标的主要手段。

Comparative planetary geology is a frontier discipline on exploring nature and evolution of human being, and a key to reaching the three major goals of Solar system exploration.

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