三级aa视频在线观看-三级国产-三级国产精品一区二区-三级国产三级在线-三级国产在线

  Home>News Center>Life
         
 

Rover finds more signs of water on Mars
(Agencies)
Updated: 2004-06-09 14:58

NASA's Mars rover Spirit has found concentrated salt below the surface of the Red Planet, offering more evidence of past water activity, mission scientists said Tuesday.


This image taken by the panoramic camera on the Mars Exploration Rover Spirit shows a trench dug by the rover on its way toward the 'Columbia Hills.' Measurements taken of the soil contained in the trench by Spirit's alpha particle X-ray spectrometer showed the presence of sulfur and magnesium. One possible explanation for these findings is that water percolated through underground material and dissolved out minerals, then as the water evaporated near the surface, it left concentrated salts behind. [NASA]
LCD TVs may finally have a leg up on plasma displays. Digital projectors can turn a wall into a dream theater. Take a look at the Top 10 LCD monitors for sprucing up your desktop.

The wheeled robot found the salt while analyzing the composition of a trench it had dug in a large crater. Scientists believe the salt may have been deposited after water drained through the soil, dissolving materials in rocks.

Cornell University astronomer Steve Squyres, the mission's main scientist, said the findings offered "much more compelling evidence than we have found anywhere else" in the vast Gusev Crater region, which the rover has explored since landing Jan. 3.

NASA announced in March that Spirit's twin rover, Opportunity, had determined that rocks at a site on the other side of the planet were once soaked with liquid water and conditions would have been suitable for life.

Evidence at that location included a large amount of crystalized salt inside rock, indicating it was dissolved in water and then left behind when the water evaporated.

The findings were announced as Opportunity was being readied to enter a deep crater that could offer clues to the planet's history of water, despite the risk that the craft may not be able to get out.

Mission scientists have said the potential scientific value of exploring Endurance Crater outweighs the risk that the rover may not be able to drive back up its steep inner slope.

 
  Today's Top News     Top Life News
 

Agree to have one child? Get a nice cash reward

 

   
 

DaimlerChrysler to invest 1b euros in China

 

   
 

Nuke talks in `substantial period'

 

   
 

Ex-factory prices of gasoline, diesel raised

 

   
 

HK banks urged to check for terrorist links

 

   
 

President Hu visits Poland

 

   
  Rover finds more signs of water on Mars
   
  Newlywed J-Lo expecting baby: report
   
  Shanghai indie goes mainstream
   
  Musicians sink roots in reality
   
  Prince Charles to marry again? Who cares
   
  Anthony won't confirm J. Lo marriage
   
 
  Go to Another Section  
 
 
  Story Tools  
   
  Feature  
  Beckham signs Gillette deal  
Advertisement
         
主站蜘蛛池模板: 日本一级特级毛片视频 | 2021最新国产成人精品视频 | 国产伦精品一区二区三区精品 | 欧美日本一道本 | 嘛豆传媒的短视频动漫 | 精品国产高清自在线一区二区三区 | 国产一区二区在线观看麻豆 | 黄a在线 | 免费福利视频在线观看 | 国产精品一区二区免费 | 一级毛片高清免费播放 | 九九精品免视看国产成人 | 国产女主播一二三区丝袜美腿 | 五月天婷婷亚洲 | 播放中国女人毛片一级带 | 久久久精品久久久久久久久久久 | 久久精品综合免费观看 | 欧美日韩a | 黄色在线观看视频 | 欧美xxxx性疯狂bbbb | 国产精品夜夜春夜夜爽久久 | 国产日韩欧美亚洲精品95 | 日本一级作爱片在线观看 | 91精品国产高清在线入口 | 欧美日韩在线精品成人综合网 | 可以免费看的毛片 | 成 人 黄 色视频免费播放 | 中国人xxxxxxx免费看 | 公又粗又长又大又深好爽日本 | 国产全黄a一级毛片视频 | 2020久久精品国产免费 | 久久综合综合久久 | 国内日本精品视频在线观看 | 福利在线观看视频 | 国产日韩欧美综合一区二区三区 | 黄色一级片在线看 | 日本xxxxx护士16| 欧美r级限制禁片在线观看 欧美va在线高清 | 一级二级黄色片 | 亚洲精品一区最新 | 一级毛片女学护士 |