为了纪念万，月球背面有一座以他的名字命名的环形山。
To remember Wan, there is a crater (环形山) on the far side of the moon which is named after him.
科学家们对月球的背面尤其感兴趣，因为它有许多深环形山，比我们熟悉的一面要多。
The far side of the moon is of particular interest to scientists because it has a lot of deep craters, more so than the familiar near side.
插图中，右边是大一些的皮塔·图斯环形山。
土卫一上这个巨型环形山为什么有这么古怪的颜色？
科学家估计环形山内埋藏的冰总量至少达到6亿吨。
Scientists estimate at least 600 milliontons of ice could be entombed in these craters.
科学家估计环形山内埋藏的冰总量至少达到6亿吨。
Scientists estimate at least 600 million tons of ice could be entombed in these craters.
远古的河道和环形山暗示了火星上曾有过水源。
Ancient river channels and craters suggest that Mars once supported oceans of water.
月球北极环形山内部CPR值较高，而边缘CPR值较低。
The North Pole craters had a high CPR on the inside, with a low CPR on the edges.
土卫十一，在上图中，实际远远地在环形山密布的土卫五后面。
Epimetheus, as pictured above, is actually well behind the heavily cratered Rhea.
盖尔环形山最明显的特征就是陨坑中间突兀的耸立着一座塔状的岩堆。
This site's most obvious feature is a towering pile of materials that sits smack in the middle of the wide crater.
奋进环形山，希望能保有火星古地质和是否存在生命的新线索。
Endeavor, it is hoped, holds new clues to the ancient geology of Mars and whether Mars could once have harbored life.
奥普特拉树木森林在燃烧，整个环形山看起来就像个地狱熔炉。
The Optera tree forest was ablaze, giving the crater the look of a devil's cauldron.
在那里，由于常年不见太阳，它们才能在又黑又冷的环形山内长期保存下来。
There they had remained trapped within dark and frigid craters that never see the Sun.
最近的资料表明，现在比过去更倾向于火山是大多数环形山的起因。
Present evidence points to a volcanic origin far in the past for the majority of the craters.
月球表面遍布的环形山是由41亿年到38亿年前太空陨石剧烈撞击月球而形成的。
The Moon's heavily cratered surface is the result of intense pummelling by space rocks between 4.1 and 3.8 billion years ago.
数十年来科学家们一直试图想搞清为何月球正面布满环形山而背面的山高过3千米。
For decades scientists have been trying to understand why the visible near side of the Moon is covered in craters while the far side has mountain ranges higher than 3, 000 metres.
一个比创造了130千米赫歇尔环形山更大的撞击很可能会毁了整个土卫一。
An impact on Mimas much larger than the one that created the 130-kilometer Herschel would likely have destroyed the entire world.
这是月球南极的沙克尔顿环形山，而变换器是将太阳光投射到绿洲的定日镜。
This is the Shackleton crater at the lunar South Pole and TransFormers are the heliostats projecting sunlight onto the oasis.
土卫一，土星的一颗较小的卫星，却炫耀着全太阳系最大的撞击坑之一的赫歇尔环形山。
Mimas, one of the smaller round moons of Saturn, sports Herschel crater, one of the larger impact craters in the entire Solar System.
若要在赫西俄德或其他环形山看到这种光线，可以根据观测者的位置算出它出现的时间。
Seen in Hesiodus and other craters, the ray timing can be calculated based on the observer's location.
另外，埃伯斯·沃德环形山有可能与霍尔登环形山一样，可供分析的材料种类并不是很多。
And, like Holden Crater, it may not provide an extensive variety of materials for analysis.
去年11月，NASA在月球南极附近的Cabeus环形山进行的撞击实验也发现了水存在的证据。
In November, NASA crashed a probe into the Cabeus crater near the moon's South Pole and also found evidence of water.
如果一切按照计划进行，这个1.5吨重的卫星将会在11月11日飞临布满环形山的月球表面。
If all goes to plan, the 1.5-tonne satellite should be flying over the pockmarked lunar surface November 11.
“圣杯”项目经理大卫·雷曼表示美国宇航局将人为使这两辆探测器撞击月球北极附近的环形山。
Grail project manager David Lehman says NASA will intentionally crash the probes into a mountain near the Moon's North Pole.
月球环形山观测与遥感卫星（LCROSS）项目中，“半人马座”火箭被撞击进入月球南极的一个环形山内。
The Lunar CraterRemote Observation and Sensing Satellite (LCROSS) mission involved deliberately crashing a spent Centaur rocket into a crater near the Moon's south pole.
“从某种意思上说，碰撞过程中产生过环形山，但是参与碰撞的物质又把它填满了。”Asphaug说到。
"In a way you do make a crater, but you fill it all in with the impactor material, " says Asphaug.
南极的艾肯特盆地陷入月球表面8英里，称得上是太阳系内最大的撞击形成环形山，那里可能存在着冰块形式的水。
The South Pole's Aitken Basin, an eight-mile deep gouge in the lunar crust, ranks as the largest impact crater in the solar system, and could hold water in the form of ice.
卫星图像的分析表明，因湖泊而留存在火星中纬度上的环形山与在阿拉斯加州和西伯利亚发现的非常相似。
Analysis of satellite images has revealed craters left along Mars' equator by lakes similar to those found in Alaska and Siberia.
卫星图像的分析表明，因湖泊而留存在火星中纬度上的环形山与在阿拉斯加州和西伯利亚发现的非常相似。
Analysis of satellite images has revealed craters left along Mars' equator by lakes similar to those found in Alaska and Siberia.
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