日本太空探测器抵达小行星
<p><span word="A">A</span> <span word="Japanese">Japanese</span> <span word="space">space</span> <span word="probe">probe</span> <span word="has">has</span> <span word="arrived">arrived</span> <span word="at">at</span> <span word="an">an</span> <span word="asteroid">asteroid</span> <span word="after">after</span> <span word="a">a</span> <span word="three">three</span>-<span word="and">and</span>-<span word="a">a</span> <span word="half">half</span> <span word="year">year</span>, 300 <span word="million">million</span> <span word="kilometer">kilometer</span> <span word="journey">journey</span> <span word="through">through</span> <span word="deep">deep</span> <span word="space">space</span> <span word="to">to</span> <span word="collect">collect</span> <span word="information">information</span> <span word="about">about</span> <span word="the">the</span> <span word="origins">origins</span> <span word="of">of</span> <span word="the">the</span> <span word="solar">solar</span> <span word="system">system</span>.</p><p><span word="The">The</span> <span word="Japanese">Japanese</span> <span word="Aerospace">Aerospace</span> <span word="Exploration">Exploration</span> <span word="Agency">Agency</span> <span word="says">says</span> <span word="the">the</span> <span word="Hayabusa">Hayabusa</span>2 <span word="probe">probe</span> <span word="entered">entered</span> <span word="into">into</span> <span word="a">a</span> <span word="position">position</span> <span word="about">about</span> 20 <span word="kilometers">kilometers</span> <span word="above">above</span> <span word="the">the</span> <span word="Ryugu">Ryugu</span> <span word="asteroid">asteroid</span> <span word="Wednesday">Wednesday</span>. <span word="The">The</span> <span word="probe">probe</span> <span word="will">will</span> <span word="spend">spend</span> <span word="the">the</span> <span word="next">next</span> 18 <span word="months">months</span> <span word="taking">taking</span> <span word="photographic">photographic</span> <span word="images">images</span> <span word="of">of</span> <span word="Ryugu">Ryugu</span>, <span word="which">which</span> <span word="is">is</span> <span word="named">named</span> <span word="after">after</span> <span word="an">an</span> <span word="undersea">undersea</span> <span word="palace">palace</span> <span word="in">in</span> <span word="ancient">ancient</span> <span word="Japanese">Japanese</span> <span word="folklore">folklore</span>, <span word="and">and</span> <span word="deploy">deploy</span> <span word="a">a</span> <span word="French">French</span>-<span word="German">German</span> <span word="built">built</span> <span word="lander">lander</span> <span word="to">to</span> <span word="study">study</span> <span word="the">the</span> <span word="surface">surface</span>.</p><p><span word="Hayabusa">Hayabusa</span>2 <span word="will">will</span> <span word="eventually">eventually</span> <span word="land">land</span> <span word="on">on</span> <span word="Ryugu">Ryugu</span> <span word="itself">itself</span> <span word="during">during</span> <span word="the">the</span> <span word="mission">mission</span>. <span word="It">It</span> <span word="will">will</span> <span word="send">send</span> <span word="out">out</span> <span word="a">a</span> <span word="device">device</span> <span word="that">that</span> <span word="will">will</span> <span word="shoot">shoot</span> <span word="a">a</span> 2-<span word="kilogram">kilogram</span> <span word="copper">copper</span> <span word="projectile">projectile</span> <span word="into">into</span> <span word="the">the</span> <span word="surface">surface</span> <span word="that">that</span> <span word="will">will</span> <span word="create">create</span> <span word="a">a</span> <span word="small">small</span> <span word="crater">crater</span>. <span word="The">The</span> <span word="probe">probe</span> <span word="will">will</span> <span word="land">land</span> <span word="near">near</span> <span word="the">the</span> <span word="surface">surface</span> <span word="and">and</span> <span word="collect">collect</span> <span word="the">the</span> <span word="underground">underground</span> <span word="material">material</span> <span word="blown">blown</span> <span word="out">out</span> <span word="of">of</span> <span word="the">the</span> <span word="crater">crater</span>.</p><p><span word="Hayabusa">Hayabusa</span>2 <span word="is">is</span> <span word="due">due</span> <span word="to">to</span> <span word="return">return</span> <span word="to">to</span> <span word="Earth">Earth</span> <span word="in">in</span> <span word="late">late</span> 2020.</p><p>日本的一艘收集太阳系起源信息的太空探测器历时3年半，向太空深处航行了3亿公里之后，飞抵一颗小行星。</p><p>日本宇宙航空研究开发机构说，“隼鸟二号”探测器星期三飞到距离小行星龙宫20公里的位置。这艘探测器将花18个月的时间拍摄小行星龙宫的图片。这颗小行星以日本古代传说中的海底宫殿命名。探测器还要向小行星放出一个法国和德国联合制造的登陆器，研究小行星的表面。</p><p>隼鸟二号探测器最终也会降落到小行星龙宫的表面。它将先释放一个装置，把一个两公斤重的铜块发射到小行星表面，形成一个形状像火山口的小撞击坑，然后在那附近降落，收集表面被撞击出来的物质。</p>
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