国内英语资讯:China Focus: Relay satellite Queqiao plays key role in exploring moons far side
<p><span word="BEIJING">BEIJING</span>, <span word="Jan">Jan</span>. 6-- <span word="China">China</span>'<span word="s">s</span> <span word="Chang">Chang</span>'<span word="e">e</span>-4 <span word="probe">probe</span> <span word="has">has</span> <span word="started">started</span> <span word="the">the</span> <span word="exploration">exploration</span> <span word="on">on</span> <span word="the">the</span> <span word="far">far</span> <span word="side">side</span> <span word="of">of</span> <span word="the">the</span> <span word="moon">moon</span> <span word="thanks">thanks</span> <span word="to">to</span> <span word="the">the</span> <span word="relay">relay</span> <span word="satellite">satellite</span> <span word="that">that</span> <span word="provides">provides</span> <span word="a">a</span> <span word="communication">communication</span> <span word="link">link</span> <span word="with">with</span> <span word="ground">ground</span> <span word="control">control</span>.</p><p><span word="The">The</span> <span word="relay">relay</span> <span word="satellite">satellite</span>, <span word="named">named</span> <span word="Queqiao">Queqiao</span>, <span word="meaning">meaning</span> <span word="Magpie">Magpie</span> <span word="Bridge">Bridge</span>, <span word="after">after</span> <span word="a">a</span> <span word="Chinese">Chinese</span> <span word="legend">legend</span>, <span word="was">was</span> <span word="launched">launched</span> <span word="on">on</span> <span word="May">May</span> 21, 2018, <span word="and">and</span> <span word="became">became</span> <span word="the">the</span> <span word="first">first</span> <span word="communication">communication</span> <span word="satellite">satellite</span> <span word="operating">operating</span> <span word="in">in</span> <span word="the">the</span> <span word="halo">halo</span> <span word="orbit">orbit</span> <span word="around">around</span> <span word="the">the</span> <span word="second">second</span> <span word="Lagrangian">Lagrangian</span> (<span word="L">L</span>2) <span word="point">point</span> <span word="of">of</span> <span word="the">the</span> <span word="earth">earth</span>-<span word="moon">moon</span> <span word="system">system</span>, <span word="nearly">nearly</span> 500,000 <span word="km">km</span> <span word="from">from</span> <span word="the">the</span> <span word="earth">earth</span>.</p><p><span word="The">The</span> <span word="maximum">maximum</span> <span word="distance">distance</span> <span word="between">between</span> <span word="the">the</span> <span word="satellite">satellite</span> <span word="and">and</span> <span word="the">the</span> <span word="Chang">Chang</span>'<span word="e">e</span>-4 <span word="probe">probe</span> <span word="on">on</span> <span word="the">the</span> <span word="far">far</span> <span word="side">side</span> <span word="of">of</span> <span word="the">the</span> <span word="moon">moon</span> <span word="is">is</span> 79,000 <span word="km">km</span>. <span word="The">The</span> <span word="satellite">satellite</span> <span word="processes">processes</span> <span word="data">data</span> <span word="from">from</span> <span word="the">the</span> <span word="probe">probe</span> <span word="and">and</span> <span word="transmits">transmits</span> <span word="it">it</span> <span word="to">to</span> <span word="earth">earth</span>, <span word="said">said</span> <span word="Sun">Sun</span> <span word="Ji">Ji</span>, <span word="a">a</span> <span word="designer">designer</span> <span word="of">of</span> <span word="the">the</span> <span word="satellite">satellite</span> <span word="from">from</span> <span word="the">the</span> <span word="China">China</span> <span word="Academy">Academy</span> <span word="of">of</span> <span word="Space">Space</span> <span word="Technology">Technology</span>.</p><p><span word="The">The</span> <span word="satellite">satellite</span> <span word="can">can</span> <span word="stay">stay</span> <span word="in">in</span> <span word="its">its</span> <span word="orbit">orbit</span> <span word="for">for</span> <span word="a">a</span> <span word="long">long</span> <span word="time">time</span> <span word="due">due</span> <span word="to">to</span> <span word="its">its</span> <span word="relatively">relatively</span> <span word="low">low</span> <span word="fuel">fuel</span> <span word="consumption">consumption</span>, <span word="as">as</span> <span word="the">the</span> <span word="earth">earth</span>'<span word="s">s</span> <span word="and">and</span> <span word="moon">moon</span>'<span word="s">s</span> <span word="gravity">gravity</span> <span word="balances">balances</span> <span word="its">its</span> <span word="orbital">orbital</span> <span word="motion">motion</span>, <span word="said">said</span> <span word="Zhang">Zhang</span> <span word="Lihua">Lihua</span>, <span word="chief">chief</span> <span word="designer">designer</span> <span word="of">of</span> <span word="the">the</span> <span word="satellite">satellite</span>.</p><p><span word="While">While</span> <span word="in">in</span> <span word="orbit">orbit</span>, <span word="it">it</span> <span word="can">can</span> "<span word="see">see</span>" <span word="both">both</span> <span word="the">the</span> <span word="earth">earth</span> <span word="and">and</span> <span word="the">the</span> <span word="far">far</span> <span word="side">side</span> <span word="of">of</span> <span word="the">the</span> <span word="moon">moon</span>. <span word="From">From</span> <span word="earth">earth</span>, <span word="the">the</span> <span word="orbit">orbit</span> <span word="looks">looks</span> <span word="like">like</span> <span word="a">a</span> <span word="halo">halo</span> <span word="on">on</span> <span word="the">the</span> <span word="moon">moon</span>, <span word="said">said</span> <span word="Zhang">Zhang</span>.</p><p><span word="The">The</span> <span word="concept">concept</span> <span word="of">of</span> <span word="deploying">deploying</span> <span word="a">a</span> <span word="relay">relay</span> <span word="satellite">satellite</span> <span word="in">in</span> <span word="the">the</span> <span word="halo">halo</span> <span word="orbit">orbit</span> <span word="was">was</span> <span word="first">first</span> <span word="put">put</span> <span word="forward">forward</span> <span word="by">by</span> <span word="U">U</span>.<span word="S">S</span>. <span word="space">space</span> <span word="experts">experts</span> <span word="in">in</span> <span word="the">the</span> 1960<span word="s">s</span>, <span word="but">but</span> <span word="was">was</span> <span word="realized">realized</span> <span word="by">by</span> <span word="Chinese">Chinese</span> <span word="space">space</span> <span word="engineers">engineers</span>.</p><p>"<span word="We">We</span> <span word="will">will</span> <span word="let">let</span> <span word="Queqiao">Queqiao</span> <span word="work">work</span> <span word="as">as</span> <span word="long">long</span> <span word="as">as</span> <span word="possible">possible</span>. <span word="It">It</span> <span word="could">could</span> <span word="also">also</span> <span word="provide">provide</span> <span word="communication">communication</span> <span word="for">for</span> <span word="probes">probes</span> <span word="from">from</span> <span word="other">other</span> <span word="countries">countries</span> <span word="if">if</span> <span word="they">they</span> <span word="intend">intend</span> <span word="to">to</span> <span word="explore">explore</span> <span word="the">the</span> <span word="moon">moon</span>'<span word="s">s</span> <span word="far">far</span> <span word="side">side</span> <span word="within">within</span> <span word="the">the</span> <span word="lifetime">lifetime</span> <span word="of">of</span> <span word="the">the</span> <span word="satellite">satellite</span>," <span word="said">said</span> <span word="Ye">Ye</span> <span word="Peijian">Peijian</span>, <span word="an">an</span> <span word="academician">academician</span> <span word="of">of</span> <span word="the">the</span> <span word="Chinese">Chinese</span> <span word="Academy">Academy</span> <span word="of">of</span> <span word="Sciences">Sciences</span> <span word="and">and</span> <span word="a">a</span> <span word="senior">senior</span> <span word="space">space</span> <span word="expert">expert</span>.</p>
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