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月亮的表面布满陨石坑。 The surface of the moon is pitted with craters. | ||
这次撞击释放了大量的能量,挖出了一个大约有月球上的第谷陨石坑两倍大的陨石坑。 This impact released an enormous amount of energy, excavating a crater about twice as large as the lunar crater Tycho. | ||
只要找到了通向月球两极附近陨石坑底部的路,这些水分子就会永远冻结,因为这些陨石坑的底部总是在阴暗处。 Any water molecules that found their way to the floors of craters near the moon's poles, that water would be perpetually frozen, because the floors of those craters are always in shadow. | ||
我们在静海的一个小陨石坑旁安全着陆。 We made a perfect landing beside a small crater in the Sea of Tranquillity. | ||
放射状的峡谷从陨石坑向外延伸,尤其在东部和东南部。 Radial gorges extend outward from the crater, especially in the east and southeast. | ||
众所周知,希克苏鲁伯陨石坑可能只是一个“开胃酒”。 The Chicxulub crater, as it is known, may have been a mere aperitif. | ||
这幅图片显示了火星北半球中纬度地区的一个面向西侧的陨石坑。 This image shows the west-facing side of an impact crater in the mid-latitudes of Mars' northern hemisphere. | ||
但是这个巨型冰结确为火星表面庞大陨石坑的墙阶的一部分。 But this colossal ice formation is actually a portion of the wall terraces of a huge crater on Mars. | ||
在那些远离希克苏鲁伯陨石坑的地点,有证据显示只发生过一次撞击事件。 The sites that are distant from Chicxulub show evidence of only one impact. | ||
信使号太空船在德加陨石坑表面观测到因熔融冷却收缩所产生的斑驳裂痕。 In MESSENGER's view, the crater floor is seen to be filled with an intricate series of cracks, formed as the molten surface resulting from the impact cooled and contracted. | ||