TED英语演讲我们从何而来 VIP免费

此资料由网络收集而来，如有侵权请告知上传者立即删除。资料共分享，我们负责传递知识。TED英语演讲：我们从何而来以TED2020的主题为出发点，史蒂芬;霍金教授提出了一些关于我们宇宙的重要问题──宇宙如何开始?生命何起源?宇宙中只有我们吗?与此同时，霍金教授也讨论了我们探究破解这些问题的途径。下面是小编为大家收集关于TED英语演讲：我们从何而来，欢迎借鉴参考。演说题目：Questioningtheuniverse演说者：StephenHawkingThereisnothingbiggerorolderthantheuniverse.ThequestionsIwouldliketotalkaboutare:one,wheredidwecomefrom?Howdidtheuniversecomeintobeing?Arewealoneintheuniverse?Istherealienlifeoutthere?Whatisthefutureofthehumanrace?没什么比宇宙更广大更久远的了。你们的问题中我想聊一下的是：你我何从?宇宙何来?宇宙中就只有我们?有外星异生物么?人类的未来将会如何?Upuntilthe1920s,everyonethoughttheuniversewasessentiallystaticandunchangingintime.Thenitwasdiscoveredthattheuniversewasexpanding.Distantgalaxiesweremovingawayfromus.Thismeanttheymusthavebeenclosertogetherinthepast.Ifweextrapolateback,wefindwemusthaveallbeenontopofeachotherabout15billionyearsago.ThiswastheBigBang,thebeginningoftheuniverse.上世纪2020年代之前，所有人都以为宇宙基本上是处于稳态，流金岁月，持恒不变。之后我们发现原来宇宙正在膨胀中。辽远星系一直飞离我们，这意味着它们必定曾相靠近。我们若往后推算，就会发现我们必都曾於约150亿年前，互相堆叠在一起。正是这"霹雳大爆炸";;宇宙之起始。ButwasthereanythingbeforetheBigBang?Ifnot,whatcreatedtheuniverse?WhydidtheuniverseemergefromtheBigBangthewayitdid?Weusedtothinkthatthetheoryoftheuniversecouldbedividedintotwoparts.First,therewerethelawslikeMaxwell'sequationsand此资料由网络收集而来，如有侵权请告知上传者立即删除。资料共分享，我们负责传递知识。generalrelativitythatdeterminedtheevolutionoftheuniverse,givenitsstateoverallofspaceatonetime.Andsecond,therewasnoquestionoftheinitialstateoftheuniverse.然而大爆炸前可有什么吗?若是没有，又是什么创造宇宙呢?宇宙缘何要从大霹雳中冒出呢?过往我们都认为宇宙论可分成两部分，首先，是定律。像”;麦克斯韦方程组”;'和“;广义相对论”;以其于同一刻设定整个时空之状态，而决定了宇宙之演化进程。次之，是对宇宙雏形的疑问。Wehavemadegoodprogressonthefirstpart,andnowhavetheknowledgeofthelawsofevolutioninallbutthemostextremeconditions.Butuntilrecently,wehavehadlittleideaabouttheinitialconditionsfortheuniverse.However,thisdivisionintolawsofevolutionandinitialconditionsdependsontimeandspacebeingseparateanddistinct.第一部分我们取得良好进展，除了”;至极端境况”;'以外。现在已对演化规律于所有境况下之进程有所掌握。可直至最近，我们仍对宇宙初生当时之周围条件不甚了了。然而，这演化律及初始条件之界分，乃囿于"时空分明"之概念内。Underextremeconditions,generalrelativityandquantumtheoryallowtimetobehavelikeanotherdimensionofspace.Thisremovesthedistinctionbetweentimeandspace,andmeansthelawsofevolutioncanalsodeterminetheinitialstate.Theuniversecanspontaneouslycreateitselfoutofnothing.而於极端条件下，广义相对论及量子论容许”;时间”;如同”;空间”;的另一维度般运作。这就将”;时.空”;之间区别移除了，即是说演化律亦可决定初始状态。宇宙可以由无变有自我创生!Moreover,wecancalculateaprobabilitythattheuniversewascreatedindifferentstates.ThesepredictionsareinexcellentagreementwithobservationsbytheWMAPsatelliteofthecosmic此资料由网络收集而来，如有侵权请告知上传者立即删除。资料共分享，我们负责传递知识。microwavebackground,whichisanimprintoftheveryearlyuniverse.Wethinkwehavesolvedthemysteryofcreation.Maybeweshou...