欧洲航天器为彗星软着陆做准备_科学技术

欧洲航天器为彗星软着陆做准备

文章来源：未知文章作者：enread 发布时间：2014-11-12 08:12 字体： [大中小]　进入论坛

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A European spacecraft is a big step closer to attempting a first-ever soft landing on a comet.

欧洲一架航天器向首次在彗星上软着陆迈进了一大步。

$This photo released by the European Space Agency on December 20, 2013 shows an artist impression of Rosetta\s lander Philae (back view) on the surface of comet 67P/Churyumov-Gerasimenko.$
This photo released by the European Space Agency on December 20, 2013 shows an artist impression of Rosetta\s lander Philae (back view) on the surface of comet 67P/Churyumov-Gerasimenko.

The European Space Agency's Rosetta probe is currently orbiting Comet 67P/Churyumov-Gerasimenko in deep space.

It has been given the "all clear" to continue on with its maneuvers¹ later on this Wednesday.

Rosetta will drop a lander on the comet from an altitude of 20 kilometers.

If all goes according to plan, the lander will touch down about seven hours later, deploying² screws and harpoons³ to secure its position.

It will then start photographing and studying samples of the comet as Rosetta continues to hover⁴ alongside it.

"A landing has never been tried on such a small body so everything is new for us. The critical thing is for us to fly very accurately⁵. We need an extremely accurate precision of navigation so that we can separate the lander at the right time, in the right direction, with the right velocity," said mission leader Paolo Ferri.

Rosetta has become the first-ever space craft to catch up with a comet.

European scientists are hoping the Rosetta mission will help unlock some of the secrets of our solar system.

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收听单词发音

1 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

2 deploying
（尤指军事行动）使展开( deploy的现在分词 )；施展；部署；有效地利用
参考例句：
Provides support for developing and deploying distributed, component-based applications. 为开发和部署基于组件的分布式应用程序提供支持。 Advertisement, publishing, repair, and install-on-demand are all available when deploying your application. 在部署应用程序时提供公布、发布、修复和即需即装功能。

3 harpoons
n.鱼镖，鱼叉( harpoon的名词复数 )v.鱼镖，鱼叉( harpoon的第三人称单数 )
参考例句：
Greenpeace hopes to position its boats between the harpoons and the whales. 绿色和平希望他们的船能开到港口与鲸鱼群之间的地方。来自互联网 NIV Can you fill his hide with harpoons or his head with fishing spears? 7[和合]你能用倒钩枪扎满它的皮，能用鱼叉叉满它的头吗？来自互联网

4 hover
vi.翱翔，盘旋；徘徊；彷徨，犹豫
参考例句：
You don't hover round the table.你不要围着桌子走来走去。 A plane is hover on our house.有一架飞机在我们的房子上盘旋。

5 accurately
adv.准确地，精确地
参考例句：
It is hard to hit the ball accurately.准确地击中球很难。 Now scientists can forecast the weather accurately.现在科学家们能准确地预报天气。

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