英语翻译Scientiststhinkthatthereha-查字典问答网
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  英语翻译ScientiststhinkthattherehasbeenlifeonEarthformillionsofyears.However,wehaven'tfoundlifeonotherplanetsyet.Whynot?TheEarthisaplanetanditgoesaroundtheSun.EightotherplanetsalsogoaroundtheSun.Noneofthemh

  英语翻译

  ScientiststhinkthattherehasbeenlifeonEarthformillionsofyears.However,wehaven'tfoundlifeonotherplanetsyet.Whynot?

  TheEarthisaplanetanditgoesaroundtheSun.EightotherplanetsalsogoaroundtheSun.Noneofthemhasanenvironmentwithair,sopeopleandthingscannotgrow.TheSunanditsplanetsarecalledthesolarsystemThesolarsystemisasmallparofourgalaxy.

  Butscientistshavediscoveredmanyothergalaxiesintheuniverse.Theyarealongwayawayandtheirlighthastravelledformanyyearstoreachus.Itishardtounderstandhowlargetheuniverseis.

  Scientistshavesentloteofspacecrafttolookatotherplanetsinoursolarsystem,andsomespacrafthavegonebeyondthesolarsystem.However,moomehasdiscoveredanylifeinspaceyet.

  Butwhyhasnoonefromotherplanetssentusamessage?Havetheytriedtosendinformationtous?Withsomanystarsintheuniverse,arewealone,oristherelifeoutthereinspace?Wedon'tknow...yet.

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2020-05-3116:13
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宁火明

  科学家认为在好几百万年前地球上就已经有生命.尽管这样,我们还没有在其他行星上找到生命的痕迹,为什么呢?

  地球是一个行星,他绕着太阳转,其他8个行星也围着太阳,他们中没有一个是有空气的,所以人和生物不能在那里生存.太阳和行星叫做太阳系,太阳系是银河系的一部分.

  但是科学家在宇宙中也找到了其他银河系,他们离我们有很多光年,很难理解宇宙到底有多大.

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2020-05-31 16:17:56
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