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  • 航天器着陆彗星有望揭开地球之谜|友e家娱乐平台

    发布时间: 2021-01-31 22:45首页:主页 > 科技 > 阅读()
    本文摘要:inatechnologicalfeatthatgivesscientiststheirfirstopportunitytodigintoaremnantoftheearlysolarsystem, theeuropeanspaceagency’srosettamissionsuccessfullyplacedasmallspacecraftonthesurfaceofaspeedingcometonwednesday .本周三。

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    inatechnologicalfeatthatgivesscientiststheirfirstopportunitytodigintoaremnantoftheearlysolarsystem, theeuropeanspaceagency’srosettamissionsuccessfullyplacedasmallspacecraftonthesurfaceofaspeedingcometonwednesday .本周三。欧洲航天局(European Space Agency )的“罗塞塔”(Rosetta )任务已经完成了技术伟业,将小型航天器顺利送到高速移动的彗星表面,给科学家们机会,为他们首次探索初始太阳系的衰变星With this achievement,acometisnolongeramysteriousandsometimesfrighteningsprayoflightacrossthenightsky是butanothermemberofthesoy likethemoonandmars.thetechnologyoflandingonacomet,with its wisps of gravity couldbeappliedtofutureeffortstomineasteroids .以来,彗星彗星的重力非常暗,着陆彗星的技术将来可以应用于小行星的资源挖掘领域。the agency’sdirectorgeneral,Jean-Jacques Dordain,describedthetouchdownoncomet 67 p/churyumov-gerasimenko。

    iceanddustmovingfasterthan 40,000 milesanhour,AS“ABIGSTEPForhumancivilization .”欧洲航空局局长让杰克道尔丹(jean-)这颗彗星长约2.5英里。“ourambitiousrosettamissionhassecuredanotherplaceinthehistorybooks, “MR.dordainsaidatanewsconference .”notonlyisitthefirsttorendezvouswithandorbitacomet是butitisnowalsothefirsttodeliveraprobete “这不是第一次进入彗星轨道环绕,这是第一次将探测器送到彗星表面”For scientists说, oneofthecentralmysteriesthatrosettawillexploreiswhetherearth’soceansarefilledwithmeltedcomets.sincetherockybitsthatcameter ter ry对waterhastohavecomefromsomewhereelse.onepossibilityisthatcometsslammingintotheearthearlyonseededitwithwater .科学家来说,“罗岩一种可能性是彗星早期撞击地球,给了地球水。newsofthetouchdownofthe 220-pound lander,named Philae,arrivedatthemissioncontrolcenterindarmstadt,Germany, at 5336003 p.m.local time (11336003 a.m.eastern time ).cheers erupted.220重量的着陆器“弗雷”(Philae )欢呼声突然传来。

    “we’re there,and Philae is talking to us,”said Stephan Ulamec,Themanagerforthelander .“Weareonthecomet .”“我们在彗星上。》With that news,aprocessionofofficialsfromnationsandorganizations,including NASA, thathadcollaboratedonthe $ 1.75 billionmissionreveledintheaccomplishment,capping a 10-year,four-billion-million这些组织还包括NASA “How audacious! 》said James L. Green,thedirectorofnasa’splanetarysciencesdivision .“how exciting! howunbelievabletobeabletodaretolandonacomet .”“太棒了! ”。美国宇航局行星科学部主任詹姆斯l格林(James L. Green )说。“太兴奋了! 敢爬彗星,太不可思议了! Within the hour,though,a worrisome caveat came to light .但是,还有将近一个小时,经常出现令人担心的警告。

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    “it’snotonlycomplicatedtolandthere,”DR.ulamecsaidinalaternewsconference .“it’Salso,as it appears, “解读再次发生的事情可能也非常复杂”twoharpoonsthatshouldhavefiredintothecometdidnot, andthelandermaynotbesecuredtothesurface.dr.ulamecsaidfluctuationsintheradiolinkandthegenerationofpowerbythesolarpanels stedthe thesurfacebeforesettlingdownagain .本来应该有两个叉子接收装置发射到彗星上,但由于没有发射,着陆器可能没有抓住彗星的表面。奇拉米博士说,由于波动的无线联系和太阳能电池板的发电状况,“菲莱”有可能从彗星表面起波浪再次着陆。“maybetodaywedidn’tjustlandonce,we even landed twice,”Dr. Ulamec said .“今天可能不止一次,两次着陆,”奇拉米博士说。As expected,therosettaorbitermovedoutofthelineofsightofphilae, breaking radio communications .正如预期的那样,“罗塞塔”轨道飞机是theorbiteristore-establishtheradiolinkinthenextday,andmissionmanagershopethet Nonetheless是, thelanderandits 10 instrumentshavebegun 64 hoursofscientificoperationsbeforeitsbatteriesdrain.solarpanelswillrechargethebatterres 尽管ationsoverthecomingmonths,about an hour every two days .着陆器及其10台设备已经开始积极开展科学任务,在电池电量消耗之前可以运行64小时。

    由于电池是用太阳能电池板电池的,因此在今后几个月内,不会每两天展开约1小时的断续工作。thelandingculminatedatensedayasrosettamaneuveredtothecorrectpositiontoletphilaego-momentsofcelebrationwereinterspersedwith quii 在这紧张的一天中,“罗塞塔”移动到正确的方位,瓦解了“菲力”,着陆彗星表面有这天的高潮——人庆祝了这些时刻,其间进行了长时间的沉默的会面。theoperationproceeddespiteafewsmallglitchesandonepotentialshowstopperproblem 3360 failureofathrusterthatwastofireaftertouchdooo stthecomet’s surface.apinwassupposedtobreakawaxsealonthegastank,butrepeatedattemptsdidnotsucceed一个推进器发生故障,着陆后发射别针本来应该关上煤气罐的蜡封,但屡试不爽。Without the thruster是, thewashing-machine-sizephilaewouldhavetorelyonicescrewsonitslandinglegsandtheharpoonstoanchorittothecomet.thethrusses whichwh gas是, wasintendedtocounteractnotjustthepossibilityofphilaebouncingoffthesurfacebutalsotheupwardkickfromthefiringoftheharpoons .否则必须避免“菲莱”从彗星表面弹出的可能性,抵消叉子发射时的发动机。

    missionmanagersdecidedtoproceedbecausetherewasnowaytorepairit .的负责人要求继续执行任务,因为这些问题无法解决。Philae detached on schedule,for a seven-hour descent .“菲莱”按计划分离,俯冲持续了7个小时。therewassomeworryingacoupleofhourslaterwhenthelanderwasabout 10 minuteslateinre-establishingcommunicationswiththeorbiter . misss thereadingstheysawontheircomputerscreensreflectedwhathadoccurred 28 minutes earlier-thetimeittookaradiosignaltotravelthe 316 millionmilesfromrosettatoearth .管理人们没办法,等不及了。

    他们在电脑屏幕上看到的读数是28分钟前接收到的——无线信号从3.16亿英里外的“罗塞塔”传输到地球需要28分钟。butsoontheyreceivedphotos-ablurryimageofrosetta’ssolarraytakenbyphilaeabout 50 secondsafterseparation, andthenasharperimagebyrosettaofthedescendingphilae .但是,迅速地,他们收到了图像——“罗塞塔”的太阳能电池阵列的模糊图像,“菲力”分离了约50秒钟后,然后并且,收到更清晰的图像的是“罗塞塔”拍摄的“弗雷雷”骤降的场面。“weseethelandergoingdownontherighttrack,”said Andrea Accomazzo,the flight director .“我看到着陆器在正确的轨道上骤降”这次飞行中的负责人安德烈。

    For now,Philae is working,Andtheinstrumentshavealreadysentbacksomeimagesanddata.Butifitisnotanchored, philaemaynotoperateaslongashoped-theoriginalgoalwasnextmarch-asemissionsofdustandgasthecometmovesnearertothesun但是彗星因为彗星更近有太阳,尘埃和气体不会融化。evenifthelandercannotcompletethefullmission,managers have said, rosettawillstillbearesoundingsuccess.planetaryscientistshaveneverlookedatacometsocloseupforsolong .的负责人表示,该着陆器将完成所有任务行星科学家们幸运到从没在这么近的地方见过彗星。


    本文关键词:友e家娱乐官网,航天器,着陆,彗星,有望,揭开,地球,之谜,友,家

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