【材料】慢速美音-2013-08-13 3篇

念晨小斌 (澄心澄意) 圈内达人
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发表于:2013-08-10 21:44 [只看楼主] [划词开启]



Mars Rover Marks First Year on Red Planet



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This week marks the first anniversary of a major exploration effort on Mars. It has been 12 months since the exploration device called "Curiosity" landed on the distant planet. Curiosity is named for the human condition of wanting to learn or know something.


The United States space agency, NASA, says Curiosity has driven more than 1.6 kilometers on Mars. The device, called a "rover," is about the size of a car.


Curiosity has found evidence of an ancient riverbed and other signs of wet conditions. NASA scientists say that with these discoveries, Curiosity has answered the question of whether conditions on ancient Mars could have supported life.


Jim Green leads the planetary division at NASA's Science Mission Directorate.


"We found all the ingredients of life as measured in this material that's deposited in this ancient riverbed. Mars was habitable in its past."


Curiosity is a traveling laboratory that contains 10 scientific instruments. The rover has found hydrogen, oxygen and other elements necessary for life.
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