太空垃圾
文章来源:未知 文章作者:enread 发布时间:2020-12-01 08:42 字体: [ ]  进入论坛
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Many of us ponder what lies in outer space. When we look up at the night sky, we see stars, the twinkle of a moving satellite and occasionally a distant planet. But one thing we don't see is the millions of pieces of junk filling up space. It's this debris1 that's causing problems for the existing technology that's up there and which we rely on.
 
The amount of space junk is increasing. Over the last few decades, satellites and rockets have been launched into space, littering the cosmos2 as they go. It's estimated there are now millions of discarded pieces of metal and other materials in orbit – everything from old rocket segments to accidentally dropped astronaut tools, and even flecks3 of paint. The fear is that if we don't start taking this litter out of the sky soon, it will become a significant threat to active satellites. Nobu Okada, Chief Executive of Astroscale – a company working on ways to clean up space junk – says hitting "even a small paint fleck… has enough power to blow up other satellites."
 
Several ideas are being looked at to capturethe debris floating around in space. In 2018, the RemoveDebris spacecraft carried out various experiments, including testing a net that could snare4 a satellite and firing a harpoon5 at a target in orbit to try to catch it.
 
This year the UK Space Agency is helping6 to fund new approaches to tracking satellites and debris in space. Jacob Geer from UKSA told the BBC: "Space surveillance and tracking is one of the key things we can do to keep safe those satellites we rely on now, and to make sure certain orbits don't become inaccessible7 for future generations because there's too much debris in them."
 
It's clear that a solution is needed so a celestial8 deep clean can take place. But looking to the future, like any litter problem, we need to look at ways of creating less – and that shouldn't be the stuff of science fiction.


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1 debris debris     
n.瓦砾堆,废墟,碎片
参考例句:
  • After the bombing there was a lot of debris everywhere.轰炸之后到处瓦砾成堆。
  • Bacteria sticks to food debris in the teeth,causing decay.细菌附着在牙缝中的食物残渣上,导致蛀牙。
2 cosmos pn2yT     
n.宇宙;秩序,和谐
参考例句:
  • Our world is but a small part of the cosmos.我们的世界仅仅是宇宙的一小部分而已。
  • Is there any other intelligent life elsewhere in the cosmos?在宇宙的其他星球上还存在别的有智慧的生物吗?
3 flecks c7d86ea41777cc9990756f19aa9c3f69     
n.斑点,小点( fleck的名词复数 );癍
参考例句:
  • His hair was dark, with flecks of grey. 他的黑发间有缕缕银丝。
  • I got a few flecks of paint on the window when I was painting the frames. 我在漆窗框时,在窗户上洒了几点油漆。 来自《简明英汉词典》
4 snare XFszw     
n.陷阱,诱惑,圈套;(去除息肉或者肿瘤的)勒除器;响弦,小军鼓;vt.以陷阱捕获,诱惑
参考例句:
  • I used to snare small birds such as sparrows.我曾常用罗网捕捉麻雀等小鸟。
  • Most of the people realized that their scheme was simply a snare and a delusion.大多数人都认识到他们的诡计不过是一个骗人的圈套。
5 harpoon adNzu     
n.鱼叉;vt.用鱼叉叉,用鱼叉捕获
参考例句:
  • The harpoon drove deep into the body of the whale.渔叉深深地扎进鲸鱼体内。
  • The fisherman transfixed the shark with a harpoon.渔夫用鱼叉刺住鲨鱼。
6 helping 2rGzDc     
n.食物的一份&adj.帮助人的,辅助的
参考例句:
  • The poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。
  • By doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。
7 inaccessible 49Nx8     
adj.达不到的,难接近的
参考例句:
  • This novel seems to me among the most inaccessible.这本书对我来说是最难懂的小说之一。
  • The top of Mount Everest is the most inaccessible place in the world.珠穆朗玛峰是世界上最难到达的地方。
8 celestial 4rUz8     
adj.天体的;天上的
参考例句:
  • The rosy light yet beamed like a celestial dawn.玫瑰色的红光依然象天上的朝霞一样绚丽。
  • Gravity governs the motions of celestial bodies.万有引力控制着天体的运动。
TAG标签: space planet junk
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