奥巴马发文章：2030年前送人类上火星并安然无恙返回地球
<p>美国总统奥巴马近日在<span word="cnn">cnn</span>网站发布文章称，美国政府将在本世纪30年代到来之前将人类送上火星并安全返回。在文章中奥巴马提到，除了各领域的顶尖专家，美国还有上千个商业公司在从事航天研发业务。接下来两年中会首次有私人企业送宇航员去国际太空站。在为<span word="cnn">cnn</span>撰写的一篇文章中，奥巴马公布了他为太空探索设立的短期目标：执行前往火星的载人航天任务、让宇航员安然无恙地返回地球，以及实现长期居留的“雄心壮志”。</p><p><span word="One">One</span> <span word="of">of</span> <span word="my">my</span> <span word="earliest">earliest</span> <span word="memories">memories</span> <span word="is">is</span> <span word="sitting">sitting</span> <span word="on">on</span> <span word="my">my</span> <span word="grandfather">grandfather</span>'<span word="s">s</span> <span word="shoulders">shoulders</span>, <span word="waving">waving</span> <span word="a">a</span> <span word="flag">flag</span> <span word="as">as</span> <span word="our">our</span> <span word="astronauts">astronauts</span> <span word="returned">returned</span> <span word="to">to</span> <span word="Hawaii">Hawaii</span>. <span word="This">This</span> <span word="was">was</span> <span word="years">years</span> <span word="before">before</span> <span word="we">we</span>'<span word="d">d</span> <span word="set">set</span> <span word="foot">foot</span> <span word="on">on</span> <span word="the">the</span> <span word="moon">moon</span>. <span word="Decades">Decades</span> <span word="before">before</span> <span word="we">we</span>'<span word="d">d</span> <span word="land">land</span> <span word="a">a</span> <span word="rover">rover</span> <span word="on">on</span> <span word="Mars">Mars</span>. <span word="A">A</span> <span word="generation">generation</span> <span word="before">before</span> <span word="photos">photos</span> <span word="from">from</span> <span word="the">the</span> <span word="International">International</span> <span word="Space">Space</span> <span word="Station">Station</span> <span word="would">would</span> <span word="show">show</span> <span word="up">up</span> <span word="in">in</span> <span word="our">our</span> <span word="social">social</span> <span word="media">media</span> <span word="feeds">feeds</span>.</p><p>我最早的回忆之一，就是我坐在祖父的肩头上，挥舞着小旗子，迎接宇航员们返回夏威夷。在那之后，又过了几年，我们才成功登月；又过了几十年，我们才向火星上发射了一台登陆器；又过了一代人的时间，国际空间站拍摄的照片才得以出现在社交媒体上。</p>
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