Nevertheless, astronomers still believed that when a comet approached the Sun—where they could study it—the Sun's intense heat would remove the corrupted surface layer, exposing the interior.
尽管如此，天文学家们仍然相信，当一颗彗星接近太阳时——这是他们可以研究它的地方——太阳的高温将会移除损坏的表层，露出内部。
As a comet gets closer to the sun, some gases in it begin to unfreeze.
当彗星接近太阳时，其中的一些气体开始解冻。
Watch a comet, where is it going?
观察一颗彗星，它将往何处去？
Recently they have discovered a comet.
最近他们发现了一颗彗星。
If so, life may have started in a comet.
如果是这样的话，生命也许是从彗星中开始的。
它是一颗彗星吗？
This has never been seen before in a comet-like object.
这种景象从未在类似彗星的观测过程中出现过。
This was the first time ocean-like water was detected in a comet.
这是首次在彗星上检测到有海洋般的水。
In this movie, a comet miles across is headed toward Earth, sure to cause a mass extinction if it hits.
在这部影片里，以颗直径几英里的彗星直奔地球而来，一旦撞上，就会是天崩地裂的大灾难。
Can you find, in the above image, a comet, a spiral galaxy, an open star cluster, and a supernova remnant?
在上面图中，你能找到：一彗星，一旋涡星系，一疏散星团和一超新星遗迹吗？
When a comet gets close to the sun, melting ice releases pieces of dust, most no larger than grains of sand.
当彗星接近太阳时，它表面的冰壳开始融化分解成大大小小的碎片，大多数碎片并不会比沙粒更大。
Because comets are largely ice made up of frozen water and gases, a comet striking Earth then would have vaporized.
由于彗星主要是由冻结的水和气体组成的冰，撞击地球的彗星将会蒸发。
Australian Anthony Wesley discovered that a comet or asteroid had crashed into Jupiter, and emailed Nasa to let them know.
澳大利亚人安东尼·韦斯利(Anthony Wesley)发现一颗彗星或小行星曾撞击过木星，并通过电子邮件告知美国国家航空航天局。
A rocky planet takes a hit from a comet in an artist's impression of what could be going on around the nearby star Eta Corvi.
一颗岩石行星遭到了彗星的撞击，在一位艺术家的印象里，这可能就是在乌鸦座eta星附近发生的情况。
Some 65 million years ago, a comet or asteroid at least five miles wide struck the earth and blasted out a tremendous crater.
大约6500万年前，一颗宽至少5英里的彗星或小行星撞上了地球，并在地表炸出了一个大洞。
At first, astronomers thought it might be a so-called "main belt comet" — a rare case of a comet orbiting in the asteroid belt.
起先，天文学家们认为这种景象不过是所谓的“主带彗星”——即较为少见的轨道在小行星主带内的彗星。
Many scientists believe the Earth suffered a direct hit from an asteroid or that a comet could be to blame for the extinction.
许多科学家认为，地球遭受小行星或彗星的直接撞击可能是恐龙灭绝的原因。
In 2005, a NASA science mission called Deep Impact crashed an 816-pound copper mass into a comet to learn more about its icy interior.
2005年，美国宇航局的一项叫做深度撞击的科学任务，是用一块816磅重的铜质物体撞击一颗彗星，以了解其内部更冰冷的物质。
The European Space Agency's Rosetta is scheduled to orbit Comet Churyumov-Gerasimenko in 2014 and deploy a probe to make the first landing on a comet.
欧洲空间局的罗塞塔探测器预计在2014年进入丘留莫夫-格拉西缅科彗星（Comet Churyumov-Gerasimenko）的轨道，并部署一个探测器，首次登陆彗星。
In 1781, astronomer Sir William Herschel spotted an object moving in the sky and originally thought it was a comet but later realized its planetary nature.
在1781年，天文学家WilliamHerschel爵士发现天空中有个移动的物体，一开始以为是一颗彗星，后来意识到它有着行星的属性。
Every so often a comet gets flung out of the Oort Cloud, a swarm of comets on the fringes of the solar system, and gets close enough to Earth for us to see it.
经常有彗星被甩出奥尔特云(在太阳系边缘的彗星群)，并靠近地球到肉眼可以观测的距离。
Most paleontologists agree that those creatures and much of the rest of Mesozoic life ended when the Earth collided with an asteroid or a comet 65m years ago.
大多数古生物学家同意那些生物和剩下大部分的中生代生物都是在六千五百万年前地球和一颗小行星或者彗星相撞时灭绝。
Like other meteor showers, such as the Perseids and the Orionids, the Leonids happen when Earth plows through a trail of debris left in the wake of a comet orbiting the sun.
类似于英仙座流星雨，猎户座流星雨以及其他流星雨，狮子座流星雨发生于地球在绕太阳公转过程中进入充满彗星碎片的流星体质点溪流之中。
Dan's energy and spirit... he was like a comet... he TOOK OFF — but the sparks from that comet continue to set fires in people and I think will continue to do so for a very long time.
丹的能量和精神，他就像一颗彗星，匆匆离去，但是他一闪而过的光芒仍然留存在人们心中，而我相信，还能留存得更久。
NASA's Spitzer Space Telescope showing a band of dust around the bright star that strongly matches the contents-such as water ice, organics, and rock-of a comet busted apart in a collision.
nasa斯必泽太空望远镜的资料，资料显示这颗明亮的恒星周围环绕着一个尘埃带，其中的物质包含水冰、有机物和岩石，跟碰撞后粉碎的彗星物质极为相似。
A comet is an icy body that releases gas or dust.
彗星是一个释放着气体和尘埃的冰质天体。
This is a lifecycle method for a Comet interaction.
这是用于Comet交互的一个生命周期方法。
A comet may have been the cause of the Tunguska event in Russia in 1908.
1908年可能是一颗彗星导致了俄国通古斯事件。
A comet may have been the cause of the Tunguska event in Russia in 1908.
1908年可能是一颗彗星导致了俄国通古斯事件。
应用推荐