NASA發現火星表面遍布絢麗肉眼可見極光

2016/01/06 瀏覽次數:6 收藏
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  2016年1月6日CNN聽力:NASA發明火星外面遍及壯麗肉眼可見極光 比利時打造氣球迷宮

 

  

  And now, NASA scientists think they know theculprit-solar winds.

  They observed a massive amount of ions and gasesescaping during solar bursts like coronal massejections.

  Since the sun would have been incredibly active in itsinfancy, the prevalence and strength of these burstscould have had a tremendous influence in the evolution of the Martian environment and thethinning of the atmosphere.

  Scientists also observed a unique type of aurora called the diffuse aurora in the planet'snorthern hemisphere.

  Auroras occur when particles collide with a planetary atmosphere along electromagnetic fields.

  They're not uncommon.

  In fact, they've been observed above all planets with a substantial atmosphere, even somemoons.

  But the aurora seen on Mars was at the lowest altitude observed on any planet.

  The unique characteristics of this aurora versus those observed on Earth may bedetermined by the very different magnetic field configurations of the two planets.

  As NASA gears up to send astronauts to Mars in the 2030s, they hope to gain further insightsinto the Red Planet's past, so we can better prepare ourselves for these future missions.

  We might have visited a corn maze last month.

  It`s kind of a fall tradition in many parts of the U.S.

  This expands on the idea-it`s a balloon maze, almost 6,500 square feet of inflatablemisdirection.

  More than 80,000 balloons, the builder say it took three days to inflate them and arrangethem.

  And that this is the biggest maze of its kind.

  It`s part of an international balloon conference in Belgium.

  You really have to see it to know it`s not balloony.

  And even when you do, it looks like a stretch that someone would get such an inflated idea tofloat such an airy possibility and not be full of hot air.

  Whenever anyone gets lost,though, you better hope they`re not on pins and needles.

  Their escape could sound a lot like pop music.

  CNN STUDENT NEWS hopes to see you Tuesday.

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