Tracking Outer Space Debris

Every year satellites are damaged or destroyed by objects orbiting the Earth's atmosphere. An Australian company is now using the latest laser technology to track these objects in order to reduce cosmic damage.

Li Dong has the details.

 
Even in space, collisions can't be avoided.

An increasing amount of floating debris¹, known as space junk, poses a real threat to fragile satellites and equipment orbiting the earth.

Space junk can range from a fleck² of paint to a full-size rocket booster, both of which can cause serious impact damage or even punctures³.

An Australian company, Electro Optic Systems or EOS, recently secured a 3 million US dollar contract to track these rogue⁴ objects and save the country's valuable space assets using state of the art laser technology.

This laser technology can track an object as small as a fingernail.

The debris can be pinpointed⁵ and monitored, allowing space shuttles and satellites to be maneuvered⁶ out of harm's way.

Ben Greene is the CEO of Electro Optic Systems. Greene says that winning the contract is a big achievement for the Stromlo Observatory⁷:

"This contract is actually the last step in transitioning the technology to a full operational capability⁸."

Greene says the technology will also ensure satellites waste less fuel when there's a false alarm.

"If we can reduce the number of maneuvers⁹ that a satellite is making by 70 percent, by giving much more accurate debris tracking, then we have a 70 percent improvement in terms of the lifetime of the satellite."

Objects in space are currently tracked using radar¹⁰ technology.

Positional readings can be between 20 meters and two kilometers, unlike the laser surveillance system, which is said to be able to track debris within one point five meters of its actual position.

Such accuracy is vital. Two years ago, incorrect data led to a collision between a US communications satellite and Russian space junk.

With calls for a space clean-up mounting on the international scene, EOS hopes its laser-tracking project will attract worldwide attention.

For CRI, I am Li Dong.

1 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 fleck   

n.斑点，微粒 vt.使有斑点，使成斑驳

参考例句：

• The garlic moss has no the yellow fleck and other virus. 蒜苔无黄斑点及其它病毒。
• His coat is blue with a grey fleck.他的上衣是蓝色的，上面带有灰色的斑点。

3 punctures   

n.（尖物刺成的）小孔( puncture的名词复数 )；（尤指）轮胎穿孔；（尤指皮肤上被刺破的）扎孔；刺伤v.在（某物）上穿孔( puncture的第三人称单数 )；刺穿（某物）；削弱（某人的傲气、信心等）；泄某人的气

参考例句：

• My car has had two punctures this week. 这个星期我的汽车轮胎被戳破两次。 来自《简明英汉词典》
• SCULLY: Needle punctures, maybe. An animal bite. Electrocution of some kind. 针刺的，也许。动物的咬伤。某种电击。 来自互联网

4 rogue   

n.流氓；v.游手好闲

参考例句：

• The little rogue had his grandpa's glasses on.这淘气鬼带上了他祖父的眼镜。
• They defined him as a rogue.他们确定他为骗子。

5 pinpointed   

准确地找出或描述( pinpoint的过去式和过去分词 )； 为…准确定位

参考例句：

• His refusal to help simply pinpointed his cowardice. 他拒绝帮助正显示他的胆小。
• Computers pinpointed where the shells were coming from. 计算机确定了炮弹发射的位置。

6 maneuvered   

v.移动，用策略( maneuver的过去式和过去分词 )；操纵

参考例句：

• I maneuvered my way among the tables to the back corner of the place. 我在那些桌子间穿行，来到那地方后面的角落。 来自辞典例句
• The admiral maneuvered his ships in the battle plan. 舰队司令按作战计划进行舰队演习。 来自辞典例句

7 observatory   

n.天文台，气象台，瞭望台，观测台

参考例句：

• Guy's house was close to the observatory.盖伊的房子离天文台很近。
• Officials from Greenwich Observatory have the clock checked twice a day.格林威治天文台的职员们每天对大钟检查两次。

8 capability   

n.能力；才能；(pl)可发展的能力或特性等

参考例句：

• She has the capability to become a very fine actress.她有潜力成为杰出演员。
• Organizing a whole department is beyond his capability.组织整个部门是他能力以外的事。

9 maneuvers   

n.策略，谋略，花招( maneuver的名词复数 )

参考例句：

• He suspected at once that she had been spying upon his maneuvers. 他立刻猜想到，她已经侦察到他的行动。 来自辞典例句
• Maneuvers in Guizhou occupied the Reds for four months. 贵州境内的作战占了红军四个月的时间。 来自辞典例句

10 radar   

n.雷达，无线电探测器

参考例句：

• They are following the flight of an aircraft by radar.他们正在用雷达追踪一架飞机的飞行。
• Enemy ships were detected on the radar.敌舰的影像已显现在雷达上。