俄火星探测器将于周日坠入地球
<p><span word="The">The</span> <span word="remainder">remainder</span> <span word="of">of</span> <span word="the">the</span> <span word="crippled">crippled</span> <span word="Phobos">Phobos</span>-<span word="Grunt">Grunt</span> <span word="spacecraft">spacecraft</span> <span word="is">is</span> <span word="set">set</span> <span word="to">to</span> <span word="crash">crash</span> <span word="to">to</span> <span word="Earth">Earth</span> <span word="on">on</span> <span word="Sunday">Sunday</span> <span word="following">following</span> <span word="its">its</span> <span word="botched">botched</span> <span word="mission">mission</span> <span word="to">to</span> <span word="Mars">Mars</span>, <span word="space">space</span> <span word="experts">experts</span> <span word="have">have</span> <span word="said">said</span>.</p><p><span word="The">The</span> <span word="minibus">minibus</span>-<span word="sized">sized</span> <span word="Russian">Russian</span> <span word="craft">craft</span> <span word="has">has</span> <span word="been">been</span> <span word="in">in</span> <span word="a">a</span> <span word="low">low</span> <span word="orbit">orbit</span> <span word="around">around</span> <span word="Earth">Earth</span> <span word="since">since</span> <span word="losing">losing</span> <span word="contact">contact</span> <span word="with">with</span> <span word="engineers">engineers</span> <span word="shortly">shortly</span> <span word="after">after</span> <span word="its">its</span> <span word="launch">launch</span> <span word="on">on</span> <span word="November">November</span> 8.</p><p><span word="It">It</span> <span word="had">had</span> <span word="been">been</span> <span word="intended">intended</span> <span word="to">to</span> <span word="explore">explore</span> <span word="Phobos">Phobos</span>, <span word="one">one</span> <span word="of">of</span> <span word="Mars">Mars</span>'<span word="s">s</span> <span word="two">two</span> <span word="moons">moons</span>, <span word="but">but</span> <span word="became">became</span> <span word="stranded">stranded</span> <span word="while">while</span> <span word="still">still</span> <span word="orbiting">orbiting</span> <span word="Earth">Earth</span> <span word="and">and</span> <span word="attempts">attempts</span> <span word="to">to</span> <span word="put">put</span> <span word="it">it</span> <span word="back">back</span> <span word="on">on</span> <span word="its">its</span> <span word="original">original</span> <span word="course">course</span> <span word="failed">failed</span>.</p><p><span word="Most">Most</span> <span word="of">of</span> <span word="its">its</span> <span word="mass">mass</span> <span word="is">is</span> <span word="expected">expected</span> <span word="to">to</span> <span word="burn">burn</span> <span word="up">up</span> <span word="as">as</span> <span word="the">the</span> <span word="craft">craft</span> <span word="re">re</span>-<span word="enters">enters</span> <span word="the">the</span> <span word="atmosphere">atmosphere</span> <span word="but">but</span> 20 <span word="or">or</span> 30 <span word="pieces">pieces</span> <span word="of">of</span> <span word="small">small</span> <span word="debris">debris</span> <span word="collectively">collectively</span> <span word="weighing">weighing</span> <span word="about">about</span> 200<span word="kg">kg</span> <span word="could">could</span> <span word="reach">reach</span> <span word="Earth">Earth</span>.</p><p><span word="In">In</span> <span word="a">a</span> <span word="normal">normal</span> <span word="re">re</span>-<span word="entry">entry</span> <span word="about">about</span> 20 <span word="per">per</span> <span word="cent">cent</span> <span word="of">of</span> <span word="the">the</span> <span word="space">space</span> <span word="junk">junk</span>'<span word="s">s</span> <span word="mass">mass</span> <span word="would">would</span> <span word="be">be</span> <span word="likely">likely</span> <span word="to">to</span> <span word="reach">reach</span> <span word="Earth">Earth</span>, <span word="but">but</span> <span word="in">in</span> <span word="the">the</span> <span word="case">case</span> <span word="of">of</span> <span word="Phobos">Phobos</span>-<span word="Grunt">Grunt</span> <span word="it">it</span> <span word="could">could</span> <span word="be">be</span> <span word="even">even</span> <span word="less">less</span> <span word="because">because</span> <span word="it">it</span> <span word="contains">contains</span> <span word="large">large</span> <span word="quantities">quantities</span> <span word="of">of</span> <span word="unused">unused</span> <span word="fuel">fuel</span> <span word="which">which</span> <span word="will">will</span> <span word="burn">burn</span> <span word="or">or</span> <span word="dissipate">dissipate</span> <span word="in">in</span> <span word="the">the</span> <span word="atmosphere">atmosphere</span>.</p><p><span word="In">In</span> <span word="theory">theory</span> <span word="the">the</span> <span word="remains">remains</span> <span word="could">could</span> <span word="land">land</span> <span word="anywhere">anywhere</span> <span word="south">south</span> <span word="of">of</span> <span word="Watford">Watford</span> <span word="or">or</span> <span word="north">north</span> <span word="of">of</span> <span word="the">the</span> <span word="Falkland">Falkland</span> <span word="Islands">Islands</span>, <span word="with">with</span> <span word="a">a</span> <span word="sea">sea</span> <span word="landing">landing</span> <span word="most">most</span> <span word="likely">likely</span> <span word="due">due</span> <span word="to">to</span> <span word="the">the</span> <span word="size">size</span> <span word="of">of</span> <span word="the">the</span> <span word="oceans">oceans</span> <span word="relative">relative</span> <span word="to">to</span> <span word="the">the</span> <span word="continents">continents</span>.</p><p><span word="But">But</span> <span word="scientists">scientists</span> <span word="said">said</span> <span word="observers">observers</span> <span word="would">would</span> <span word="be">be</span> <span word="unlikely">unlikely</span> <span word="to">to</span> <span word="even">even</span> <span word="see">see</span> <span word="the">the</span> <span word="debris">debris</span> <span word="crash">crash</span> <span word="to">to</span> <span word="Earth">Earth</span> <span word="unless">unless</span> <span word="it">it</span> <span word="flew">flew</span> <span word="directly">directly</span> <span word="overhead">overhead</span> <span word="in">in</span> <span word="a">a</span> <span word="clear">clear</span> <span word="sky">sky</span>, <span word="and">and</span> <span word="that">that</span> <span word="the">the</span> <span word="chances">chances</span> <span word="of">of</span> <span word="anyone">anyone</span> <span word="being">being</span> <span word="injured">injured</span> <span word="were">were</span> <span word="absolutely">absolutely</span> <span word="minute">minute</span>.</p><p><span word="Prof">Prof</span> <span word="Richard">Richard</span> <span word="Crowther">Crowther</span> <span word="of">of</span> <span word="the">the</span> <span word="UK">UK</span> <span word="Space">Space</span> <span word="Agency">Agency</span> <span word="said">said</span>: "<span word="The">The</span> <span word="chances">chances</span> <span word="are">are</span> <span word="so">so</span> <span word="low">low</span> – <span word="it">it</span> <span word="certainly">certainly</span> <span word="doesn">doesn</span>'<span word="t">t</span> <span word="keep">keep</span> <span word="me">me</span> <span word="awake">awake</span> <span word="at">at</span> <span word="night">night</span> <span word="worrying">worrying</span> <span word="about">about</span> <span word="the">the</span> <span word="probability">probability</span> <span word="of">of</span> <span word="a">a</span> <span word="piece">piece</span> <span word="of">of</span> <span word="space">space</span> <span word="debris">debris</span> <span word="coming">coming</span> <span word="through">through</span> <span word="my">my</span> <span word="roof">roof</span>."</p>
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