久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

  Home>News Center>World
         
 

Europeans look set to launch probe to Venus
(AP)
Updated: 2005-11-09 00:47

Scientists were counting down Tuesday for the blast off of a Russian booster rocket carrying a European-built probe aimed at exploring the hot, dense atmosphere around Venus.

The launch of the European Space Agency's Venus Express probe is planned for 10:33 p.m. Tuesday EST (0333 GMT Wednesday) at the Russian-leased Baikonur cosmodrome in Kazakhstan.

Venus Express was originally scheduled to go up on Oct. 26, but had to be postponed after checks revealed a problems with the thermal insulation in the upper stage of the Soyuz-Fregat rocket. Once it separates from the rocket, scientists at ESA's mission control in Darmstadt, south of Frankfurt, plan to make contact with the probe.

"We've just had the pre-launch briefing and everything is in the green zone," said ESA spokeswoman, Jocelyne Landeau. "Everything is ready for go."

The mission, Europe's first to Venus, is aimed at exploring the hot and dense atmosphere around the planet, concentrating on its greenhouse effect and the permanent hurricane force winds that constantly encircle it.

In addition, instruments on the probe will try to find an indication whether Venus' many volcanoes are active, and look at how a planet so similar to Earth could have evolved so differently.

"Venus is still a big mystery," Gerhard Schwehm, head of the planetary missions at ESA said Monday.

Not only is Venus the nearest planet to Earth within the solar system, but the two share roughly the same mass and density. Both have inner cores of rock and are believed to have been formed at roughly the same time.

But despite these similarities, the two have vastly different atmospheres, with Venus' composed almost entirely of carbon dioxide with very little water vapor. It is also the hottest surface of all the planets and lacks atmospheric pressure.

The probe, which cost about euro220 million, or $260 million, will take 163 days, or roughly five months, to reach Venus. As a sister probe to ESA's Mars Express, launched in 2003, Venus Express shares many instruments with that, as well as the agency's Rosetta probe, launched last year and bound for a comet.

It is expected to begin its experiments in early June.

The last mission to Venus was Magellan, launched by NASA in 1989. It completed more than 15,000 orbits around the planet between 1990 and 1994.

Using radar, Magellan was able to map virtually all the surface of Venus, revealing towering volcanoes, gigantic rifts and crisp-edged craters.



Pakistan, India open checkpoint of Line of Control
Former Peruvian president pays surprise visit to Chile
Tornado kills at least 20 in the US
 
  Today's Top News     Top World News
 

President Hu visits London, Sino-UK ties get warmer

 

   
 

Bush: US-China ties 'important' and 'good'

 

   
 

Six-Party Talks resume; differences remain

 

   
 

Institute to make Tamiflu if epidemic spreads

 

   
 

Most Chinese unsatisfied with sex lives

 

   
 

US, China reach agreement on textile, clothing

 

   
  Second lawyer in Saddam trial assassinated
   
  Restive France declares state of emergency
   
  Another Saddam co-defendant's lawyer slain
   
  Iran says it's not afraid of Security Council
   
  Chilean judge denies Fujimori's request
   
  Death toll in South Asia quake at 87,350
   
 
  Go to Another Section  
 
 
  Story Tools  
   
  News Talk  
  Are the Republicans exploiting the memory of 9/11?  
Manufacturers, Exporters, Wholesalers - Global trade starts here.
Advertisement
         
主站蜘蛛池模板: 日本性色 | 极品丝袜高跟91白沙发在线 | 国产亚洲精品久久 | 亚洲国产成人最新精品资源 | 国产黄色美女 | 久草在线观看首页 | 午夜宅男在线永久免费观看网 | 国产日韩久久久久69影院 | 亚洲精品国产成人 | 王朝影院一区二区三区入口 | 精品一区二区三区五区六区 | 天堂视频免费看 | 亚洲男人在线天堂 | 久久久久亚洲国产 | 欧美日韩ay在线观看 | 极品五月天 | 欧美又粗又硬又大久久久 | 精品久久免费视频 | 日本护士一级毛片在线播放 | 欧美怡红院在线 | 午夜欧美成人香蕉剧场 | 亚洲欧美一级视频 | 国产精品视频男人的天堂 | 免费永久观看美女视频网站网址 | 国产欧美精品一区二区 | 99re5久久在热线播放 | 欧美日韩一区二区三区免费 | 久久99国产精品久久 | 美女把张开腿男生猛戳免费视频 | 亚洲国产成人久久一区二区三区 | 天天综合天天看夜夜添狠狠玩 | 欧美日韩久久 | 国产一级一级毛片 | 国产一级一国产一级毛片 | 亚洲欧美一区二区三区在线观看 | 亚洲另类在线视频 | 亚洲国产精品一区二区首页 | 精品国产午夜久久久久九九 | 国产欧美另类 | 国产性videostv另类极品 | 欧美大片a一级毛片视频 |