Why is space junk considered a problem?
为什么太空垃圾被认为是一个问题？
Many scientists are also suggesting different ways to clean up space junk.
许多科学家也提出了清理太空垃圾的不同方法。
According to BBC News, there are more than 22,000 pieces of space junk floating around the earth.
据BBC新闻报道，有超过22000块太空垃圾漂浮在地球周围。
The Germans are building robots that can collect pieces of space junk and bring them back to Earth to be safely destroyed.
德国人正在制造能够收集太空垃圾碎片并将其带回地球安全销毁的机器人。
For example, when a satellite hit an old Russian rocket in 2009, it broke into more than 2,000 pieces, increasing the amount of space junk.
例如，2009年，一颗卫星撞上了一枚俄罗斯旧火箭，它碎成了2000多块碎片，增加了太空垃圾的数量。
Pf : Probability that a piece of space junk will survive reentry.
Pf：指一块太空垃圾坠落到地球表面的概率。
If some break or collide with space junk, others can take their place.
如果其中有些损坏，或是撞上了太空垃圾，还有其他的可以代替。
The US will also fund research into cleaning up the space junk that's already there.
美国也会资助研究清除已有的太空垃圾。
Nasa engineer Creon Levit said it was imperative that something was done about space junk.
美国宇航局工程师克里昂？莱维特表示，处理太空垃圾迫在眉睫。
Earth got a close shave Monday morning from an asteroid so small it was originally mistaken for space junk.
周一早晨一颗小行星和地球擦肩而过，曾因为其太小而误认为是太空垃圾。
The ability to rendezvous in orbit could be used to help clear out space junk or inspect or fix satellites.
轨道相会技术可以被用作清理太空垃圾或是卫星修理。
NASA says it believes a large piece of space junk is not going to be any threat to the astronauts in space.
NASA称，大片的太空垃圾不会对太空中的宇航员造成威胁。
This month, NASA's Orbital Debris Program Office released data naming the top ten incidents contributing to the space junk problem.
本月美国太空署轨道碎片项目办公室公布了一份数据，显示了造成太空垃圾的十大事件。
NASA says a large piece of space junk could pass within 2 miles at the station today, but notes it does not expect to be a problem.
NASA称，今日将由一大片太空垃圾进入国际空间站2英里范围之内，但是预计不会造成什么问题。
NASA says another piece of space junk is drifting toward the International space Station just as the space shuttle is headed that way.
美国宇航局称除了航天飞机正向国际空间站飞去之外，还有一块空间垃圾也正向空间站飘来。
A new report by the National Research Council warns that the problem of space junk in earth's orbit is on the verge of getting out of control.
一份由国家研究委员会作出的新报告警告称，地球轨道上太空垃圾的问题濒临失控的边缘。
But only one woman has ever been hit by space junk: Lottie Williams from Oklahoma was smacked in the shoulder by a charred piece of space-rocket.
还好，到现在为止，只有一名妇女曾被太空垃圾击中：俄克拉何马的洛蒂·威廉姆斯的肩膀被一块烧焦的太空火箭碎片擦着了。
The theory marks a change in approach from previous research which looked into using expensive military Star Wars-style lasers to destroy space junk.
这套理论改变了我们以往关于清理太空垃圾的看法，以前的研究倾向于运用昂贵的军事激光去摧毁太空垃圾。
It happened in February 2009, when a defunct Russian Cosmos smashed into a functioning American Iridium, destroying both and creating even more space junk.
那是在2009年的二月，当时一颗报废的俄罗斯“宇宙”系列卫星猛撞在一颗正常工作的美国铱星上面，双方具毁，而且产生了更多的宇宙垃圾。
The process could also avoid what is known as 'Kessler Syndrome', where there is too much space junk flying around Earth for it to be safe to fly out, leaving us trapped on our own planet.
同时还可以避免所谓的“凯斯勒综合征”，也就是说有太过的废旧太空碎片环绕在地球周围，这威胁到了飞行安全，使得我们的星球被自身所创造的垃圾所困。
太空垃圾极其危险。
Space junk like that which recently threatened the International space Station, for example, could collide with the skeletal space solar satellite during assembly.
例如，象最近威胁过国际空间站的太空垃圾那样，在太空电站装配期间，其主体也许会受到太空垃圾的撞击。
Space junk like that which recently threatened the International space Station, for example, could collide with the skeletal space solar satellite during assembly.
例如，象最近威胁过国际空间站的太空垃圾那样，在太空电站装配期间，其主体也许会受到太空垃圾的撞击。
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