Europa moon 'spewing water jets' 木卫二表面“喷射出水汽”
<p><span word="Europa">Europa</span> <span word="moon">moon</span> '<span word="spewing">spewing</span> <span word="water">water</span> <span word="jets">jets</span>' 木卫二表面“喷射出水汽”</p><p><span word="Play">Play</span> <span word="audio">audio</span> <span word="file">file</span> 科学家们已进一步证实，木星的卫星—— 木卫二表面会向空中喷射水蒸气。在2013 年，天文学家首次用哈勃望远镜观测到并发布了这一景象，而最近他们再一次目击了该现象。木卫二的星球表面下存在大量液态水，是除地球以外最有可能发现微生物的星球之一。请听 <span word="Jonathan">Jonathan</span> <span word="Amos">Amos</span> 的报道。</p><p><span word="Europa">Europa</span> <span word="is">is</span> <span word="not">not</span> <span word="much">much</span> <span word="smaller">smaller</span> <span word="than">than</span> <span word="Earth">Earth</span>'<span word="s">s</span> <span word="moon">moon</span>. <span word="But">But</span> <span word="it">it</span> <span word="couldn">couldn</span>'<span word="t">t</span> <span word="look">look</span> <span word="more">more</span> <span word="different">different</span>. <span word="Its">Its</span> <span word="surface">surface</span> <span word="is">is</span> <span word="made">made</span> <span word="from">from</span> <span word="mottled">mottled</span> <span word="ice">ice</span>, <span word="criss">criss</span>-<span word="cross">cross</span> <span word="like">like</span> <span word="crazy">crazy</span> <span word="paving">paving</span>. <span word="And">And</span> <span word="it">it</span> <span word="has">has</span> <span word="one">one</span> <span word="key">key</span> <span word="feature">feature</span> <span word="that">that</span> <span word="utterly">utterly</span> <span word="fascinates">fascinates</span> <span word="scientists">scientists</span> – <span word="it">it</span> <span word="has">has</span> <span word="a">a</span> <span word="buried">buried</span> <span word="ocean">ocean</span> <span word="of">of</span> <span word="liquid">liquid</span> <span word="water">water</span>, <span word="far">far</span> <span word="greater">greater</span> <span word="in">in</span> <span word="volume">volume</span> <span word="than">than</span> <span word="all">all</span> <span word="the">the</span> <span word="seas">seas</span> <span word="on">on</span> <span word="Earth">Earth</span>. <span word="And">And</span> <span word="where">where</span> <span word="there">there</span> <span word="is">is</span> <span word="water">water</span>, <span word="there">there</span> <span word="is">is</span> <span word="a">a</span> <span word="possibility">possibility</span> <span word="of">of</span> <span word="life">life</span>, <span word="which">which</span> <span word="makes">makes</span> <span word="the">the</span> <span word="new">new</span> <span word="Hubble">Hubble</span> <span word="observations">observations</span> <span word="so">so</span> <span word="exciting">exciting</span>.</p><p><span word="The">The</span> <span word="telescope">telescope</span> <span word="has">has</span> <span word="spied">spied</span> <span word="what">what</span> <span word="appeared">appeared</span> <span word="to">to</span> <span word="be">be</span> <span word="plumes">plumes</span> <span word="of">of</span> <span word="water">water</span> <span word="vapour">vapour</span> <span word="spewing">spewing</span> <span word="hundreds">hundreds</span> <span word="of">of</span> <span word="miles">miles</span> <span word="above">above</span> <span word="the">the</span> <span word="surface">surface</span>, <span word="presumably">presumably</span> <span word="coming">coming</span> <span word="from">from</span> <span word="this">this</span> <span word="hidden">hidden</span> <span word="ocean">ocean</span>. <span word="One">One</span> <span word="estimate">estimate</span> <span word="is">is</span> <span word="that">that</span> <span word="the">the</span> <span word="equivalent">equivalent</span> <span word="of">of</span> <span word="an">an</span> <span word="Olympic">Olympic</span>-<span word="sized">sized</span> <span word="swimming">swimming</span> <span word="pool">pool</span> <span word="is">is</span> <span word="being">being</span> <span word="hurled">hurled</span> <span word="upwards">upwards</span> <span word="every">every</span> <span word="ten">ten</span> <span word="minutes">minutes</span> <span word="or">or</span> <span word="so">so</span>.</p><p><span word="Before">Before</span> <span word="this">this</span> <span word="is">is</span> <span word="confirmed">confirmed</span>, <span word="it">it</span> <span word="could">could</span> <span word="transform">transform</span> <span word="our">our</span> <span word="ability">ability</span> <span word="to">to</span> <span word="find">find</span> <span word="out">out</span> <span word="whether">whether</span> <span word="micro">micro</span>-<span word="organisms">organisms</span> <span word="do">do</span> <span word="indeed">indeed</span> <span word="exist">exist</span> <span word="on">on</span> <span word="Europa">Europa</span> <span word="because">because</span> <span word="we">we</span> <span word="would">would</span> <span word="just">just</span> <span word="need">need</span> <span word="to">to</span> <span word="fly">fly</span> <span word="through">through</span> <span word="the">the</span> <span word="plumes">plumes</span> <span word="with">with</span> <span word="a">a</span> <span word="spacecraft">spacecraft</span> <span word="and">and</span> <span word="sample">sample</span> <span word="them">them</span>. <span word="The">The</span> <span word="alternative">alternative</span> <span word="of">of</span> <span word="having">having</span> <span word="to">to</span> <span word="land">land</span> <span word="and">and</span> <span word="drill">drill</span> <span word="down">down</span> <span word="through">through</span> <span word="a">a</span> <span word="thick">thick</span> <span word="ice">ice</span> <span word="crust">crust</span> <span word="to">to</span> <span word="reach">reach</span> <span word="the">the</span> <span word="ocean">ocean</span> <span word="and">and</span> <span word="then">then</span> <span word="search">search</span> <span word="for">for</span> <span word="life">life</span> <span word="is">is</span> <span word="a">a</span> <span word="far">far</span> <span word="more">more</span> <span word="challenging">challenging</span> <span word="prospect">prospect</span>.</p>
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