NASA将建造太空气球环游土星
<p><span word="Jules">Jules</span> <span word="Verne">Verne</span>'<span word="s">s</span> <span word="fictional">fictional</span> <span word="adventurer">adventurer</span> <span word="Phileas">Phileas</span> <span word="Fogg">Fogg</span> <span word="may">may</span> <span word="have">have</span> <span word="been">been</span> <span word="more">more</span> <span word="ahead">ahead</span> <span word="of">of</span> <span word="his">his</span> <span word="time">time</span> <span word="than">than</span> <span word="we">we</span> <span word="thought">thought</span>. <span word="It">It</span> <span word="took">took</span> <span word="Phileas">Phileas</span> <span word="Fogg">Fogg</span> 80 <span word="days">days</span> <span word="to">to</span> <span word="circumnavigate">circumnavigate</span> <span word="the">the</span> <span word="world">world</span>.</p><p>儒勒?凡尔纳的小说中虚构的冒险家菲力斯霍治可能比我们想象的还走在时代的前列。小说中，菲力斯·霍治用了80天环游世界。</p><p><span word="Nasa">Nasa</span> <span word="has">has</span> <span word="retired">retired</span> <span word="its">its</span> <span word="expensive">expensive</span> <span word="shuttle">shuttle</span> <span word="missions">missions</span>, <span word="and">and</span> <span word="is">is</span> <span word="exploring">exploring</span> <span word="a">a</span> <span word="cheaper">cheaper</span> <span word="form">form</span> <span word="of">of</span> <span word="space">space</span> <span word="travel">travel</span> - <span word="using">using</span> <span word="balloons">balloons</span> <span word="to">to</span> <span word="travel">travel</span> <span word="across">across</span> <span word="the">the</span> <span word="surface">surface</span> <span word="of">of</span> <span word="planets">planets</span> <span word="and">and</span> <span word="moons">moons</span>.</p><p>美国宇航局停止了昂贵的穿梭计划，并开始探索较便宜的形式的太空旅行——用气球来穿越行星和卫星的表面。</p><p><span word="The">The</span> <span word="agency">agency</span> <span word="is">is</span> <span word="spending">spending</span> $10 <span word="million">million</span> <span word="trialing">trialing</span> <span word="a">a</span> <span word="series">series</span> <span word="of">of</span> <span word="blimps">blimps</span> <span word="for">for</span> <span word="use">use</span> <span word="in">in</span> <span word="future">future</span> <span word="missions">missions</span></p><p>代理中心花费1千万美金为未来的任务实验一系列的软式小型飞船。</p><p><span word="The">The</span> <span word="balloons">balloons</span> <span word="would">would</span> <span word="be">be</span> <span word="used">used</span> <span word="to">to</span> <span word="transport">transport</span> <span word="equipment">equipment</span> <span word="on">on</span> <span word="unmanned">unmanned</span> <span word="missions">missions</span>. <span word="First">First</span> <span word="stop">stop</span> <span word="on">on</span> <span word="the">the</span> <span word="list">list</span> <span word="of">of</span> <span word="potential">potential</span> <span word="destinations">destinations</span> <span word="for">for</span> <span word="a">a</span> <span word="balloon">balloon</span> <span word="is">is</span> <span word="Saturn">Saturn</span>'<span word="s">s</span> <span word="biggest">biggest</span> <span word="moon">moon</span> <span word="Titan">Titan</span>.</p><p>气球在无人的任务会被用来当作运输设备。列表上气球的第一个潜在的目的地是土星最大的卫星泰坦。</p><p><span word="To">To</span> <span word="survive">survive</span> <span word="there">there</span>, <span word="a">a</span> <span word="balloon">balloon</span>, <span word="designed">designed</span> <span word="by">by</span> <span word="Nasa">Nasa</span>'<span word="s">s</span> <span word="Jet">Jet</span> <span word="Propulsion">Propulsion</span> <span word="Laboratory">Laboratory</span>, <span word="would">would</span> <span word="have">have</span> <span word="to">to</span> <span word="withstand">withstand</span> <span word="temperatures">temperatures</span> <span word="around">around</span> -180<span word="C">C</span>.</p><p>为了在那里生存，美国宇航局喷气推进实验室设计的气球必须要经受得起零下180度左右的气温。</p>
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