Legendre and Gauss both applied the method to the problem of determining, from astronomical observations,the orbits of bodies about the Sun(mostly comets, but also later the then newly discovered minor planets).
If so, the asteroid itself could be the residue of a comet nucleus.
从某种意义上说,这是彗星上的一个相当小的标记。
In a sense, this is a fairly small mark on the comet.".
最近的一个提议是彗星在我们有机会观察之前就被破坏了。
A recent proposal is that the comets must disrupt before we get a chance to see them.
但是,奇怪的是,哈勃图像没有显示从K2中流出的尾巴,这是彗星的特征。
But, curiously, the Hubble images donot show a tail flowing from K2, which is a signature of comets.
柯伊伯带是彗星物质的两个主要储层之一,据信可以扩展到超过50个天文单位。
The Kuiper Belt is one of the two main reservoirs of cometary material and is believed to extend to over fifty astronomical units.
喷射推进实验室的副调查长James‘Gerbs'Bauer说:「2016WF9可能原本是彗星。
Deputy Principal Investigator James“Gerbs” Bauer at NASA's jet propulsion laboratorysaid:” 2016 WF9 could have cometary origins.
与此同时,陨石是在坠落到地球后幸存下来的碎片,可以是彗星或小行星的….
Meteorites, meanwhile, are the fragments that survive the fall to Earth,and can be the remains of either comets or asteroids.
但莱亚同意称这块岩石很可能来自太空,但他并不确信这是彗星的样本。
But while Leya agrees that the rock probably comes from space,he is not yet convinced it isa sample of a comet.
长期以来,天文学家一直怀疑,如果有什么东西来自另一个恒星系,那一定是彗星。
Astronomers have longsuspected that if anything came calling from another star system, it would be comets.
尤其是彗星和小行星,由于本身就较为原始,它们为我们太阳系早期的环境提供了天然的“时间胶囊”。
Comets and asteroids in particular, being primitive objects, provide a natural“time capsule” of the conditions during the early days of our solar system.
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