Also, a comparison is being made with a similar characterization for comets.
此外，正在对彗星的类似特性进行比较。

Halley and its ilk came from a distant swarm of comets called the Oort Cloud.
而哈雷彗星及其同类彗星则来自遥远的奥尔特彗星云。

Comets are conglomerations of ice, dust and rock from the early solar system.
彗星是早期太阳系中冰、灰尘和岩石的聚合物。

Once in deep space, it went though the same process of aggregating into comets.
进入外太空后，彗星形成的过程就和以前所知并无二致了。

Asteroids classify comets based on the durations of their orbits around the sun.
天文学上把彗星按照它们的轨道周期分类。

Roids are, for the most part anyway, they are just smaller bits of asteroids and comets.
大部分是比小行星体和彗星更小的的碎片。

Comets are also suspected of having brought the elements which may have bootstrapped life.
彗星还很可能 带来了那些引发了生命起源的元素。

The leading astronomers of the sixteenth and seventeenth centuries were fascinated by comets.
十六，十七世纪最主要的科学家对彗星很痴迷。

Most astronomers agree that comets are primordial remnants from the formation of the solar system.
大多数天文学家认为彗星是从太阳系形成中最初的遗留物。

Comets impacts are likely to be more rare than asteroid impacts, but theyre going to be much harder to mitigate against
与小行星相比, 彗星的冲击会更少见, 但它们将更难缓和