欧阳自远称，火星计划另外一个重要目标是，探测地球以外的太阳系，并将其它类地行星的起源与太阳系的形成相比较。
Ouyang said another important goal of the Mars mission was to detect solar systems beyond earth's reach and to compare the origins of earth-like planets with the formation of the solar system.
美国宇航局三大探测目标就是探测地球之外的世界，这三大行星都有宏大的目标，搜索类地行星。
NASA probe of the three major goal is to detect the earth outside world, the three planets has an ambitious goal, search terrestrial planets.
戴明指出，确定水的探测技术是发现类地行星的关键步骤，这种行星可能拥有水和其他与生命相关的重要分子。
Nailing down the technique for the detection of water is a key step toward finding Earth-like planets that have water and other key life-related molecules, Deming said.
尽管难以被直接探测，天文学家还是怀疑类地行星在银河系中是普遍存在的。
Though astronomers have had trouble detecting them directly, they suspect that such planets are commonplace throughout the galaxy.
如果真的有这类行星存在，NASA的类地行星搜寻者，以及ESA的达尔文计画等任务，将得以探测它们的大气，寻找象征生命存在的气体。
If such planets exist, these missions-nasa's Terrestrial planet Finder and ESA's darwin-should be able to scan their atmospheres for the presence of gases that would indicate the existence of life.
如果真的有这类行星存在，NASA的类地行星搜寻者，以及ESA的达尔文计画等任务，将得以探测它们的大气，寻找象征生命存在的气体。
If such planets exist, these missions-nasa's Terrestrial planet Finder and ESA's darwin-should be able to scan their atmospheres for the presence of gases that would indicate the existence of life.
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