The icy rings of Saturn could be what's left of an ancient ice-rock moon that got stripped and swallowed by the gas-giant planet. Christopher Intagliata reports.
土星外面有一圈冰冷的土星环，可能是遥远时期它的一颗由冰和岩石组成卫星的遗留物，而这颗卫星已经被土星这个巨大的气质行星撕裂、吞噬了。
The hut stands at the foot of a near vertical wall of rock in an icy fjord in the high Arctic, a week away by dog sled from the nearest human settlement.
小屋坐落在高纬度北极地区峡湾边一座几乎是垂直的山岩下，从最近的有人居住的地方到此地，狗拉的雪橇要走一个星期。
What does matter a lot is Eris' surprisingly large mass, which means it has considerably more rock underneath its icy surface than Pluto.
更重要的是厄里斯大得惊人的质量，它的质量意味着在它的表面冰层之下有相当多的岩石。
The photographer says the light hits these rock formations at certain angels at different times a day. Above, an icy desert landscape.
摄影师称一日之内有好几次光线会以某特定角度照射在这些岩层上。上图是冰雪荒原地貌。
They are now seen as "icy dirtballs", dominated by rock, in contrast to the "dirty snowballs" hypothesised by Fred Whipple, an astronomer at Harvard University, in 1950.
现在彗星被认为是一个主要由岩石构成的冰冷的土球。 而不是1950年哈佛大学天文学家FredWhipple假设的盖着土的冰球。
They are now seen as "icy dirtballs", dominated by rock, in contrast to the "dirty snowballs" hypothesised by Fred Whipple, an astronomer at Harvard University, in 1950.
现在彗星被认为是一个主要由岩石构成的冰冷的土球。 而不是1950年哈佛大学天文学家FredWhipple假设的盖着土的冰球。
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