1·About the same time, though, scientists realized comets might contain decaying radioactive isotopes that could have warmed cometary interiors to temperatures that caused the interiors to evolve.
然而，大约在同一时间，科学家们意识到彗星可能含有衰变的放射性同位素，这些同位素可能使彗星内部的温度升高到导致内部进化的温度。
2·Energetic light from this star is eating away the dust of the dark cometary globule at the top right the image.
从这颗恒星发出的高能光线正把途中右上角的黯淡的彗星似的小球体中的尘埃消灭掉。
3·Stardust's cometary and interstellar dust samples will help provide answers to fundamental questions about the origins of the solar system.
星团的采样的彗星和星际尘埃样本将有助于回答关于太阳系起源的一些基本问题。
4·Yet, upon further reflection, human impact on the planet is a direct analogue of the Cretaceous cometary collision.
然而进一步的说，人类对于地球的影响，完全相当于白垩纪的彗星撞击。
5·Whereas the cometary samples are relatively easy to extract from the collector plates, that is not the case for the interstellar dust samples.
与从收集盘相对容易的提取出彗星样品不同，星际尘埃要困难得多。