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1、Theuniverseisspace,time,matterandenergy,theunityofcomposition.Allspaceandtimeintegrated.Ageneralunderstandingoftheuniversethatweexistinaspace-timecontinuoussystem,includingduringallofthematerial,energyandevents.Theuniverseaccordingtothebigbangmodelprojections,theageoftheuniverseisabout20000000000yea
2、rs.宇宙空间，时间，物质和能量，所构成的统一体。所有的时间和空间综合。一般理解的宇宙，我们存在的一个时空连续系统，包括在所有的物质，能量和事件。宇宙根据大爆炸模型预测，宇宙的年龄大约是20000000000年。Space radiation preferentially destroys specific forms of amino acids,the most realistic laboratory simulation to date has found.The work suggests the molecular building blocks that form the lef
3、t-handed proteins used by life on Earth took shape in space,bolstering the case that they could have seeded life on other planets.第1页/共10页The Universe is defined as The Universe is defined as everything that physically everything that physically exists:the entirety of space exists:the entirety of sp
4、ace and time,all forms of matter,and time,all forms of matter,energy and momentum,and the energy and momentum,and the physical laws and constants that physical laws and constants that govern them.However,the term govern them.However,the term Universe may be used in slightly Universe may be used in s
5、lightly different contextual senses,different contextual senses,denoting such concepts as the denoting such concepts as the cosmos,the world or Naturecosmos,the world or Nature.第2页/共10页MercuryVenusEarthMarsJupiterSaturnUranusNeptune第3页/共10页Planetary system is the most basic Planetary system is the m
6、ost basic of universeof universe。There are eight planets There are eight planets in the solar systemin the solar system.Planets have the Planets have the satellite,a satellite of the Earth:the satellite,a satellite of the Earth:the Moon,there are other planets Moon,there are other planets outside ou
7、r solar system.outside our solar system.行星是组成宇宙的最基本系统行星是组成宇宙的最基本系统.太阳系中共有八大行星太阳系中共有八大行星,行星都有行星都有卫星绕其运转卫星绕其运转,地球有一个卫星地球有一个卫星:月月球球,有证据表明有证据表明,太阳系外也存在其太阳系外也存在其他行星系统他行星系统.PlanetPlanet第4页/共10页Stars like the Sun is itself able to emit light and heat the planet.We have more than 100 billion stars within th
8、e Milky Way Galaxy.If even thousands of stars together to form a star,this is the cluster（星团）.They found that more than 1000 such clusters in the Milky Way Galaxy.恒星就是像太阳一样本身能恒星就是像太阳一样本身能发光发热的星球发光发热的星球.我们银河系我们银河系内就有内就有10001000多亿颗恒星多亿颗恒星.如果如果成千上万颗星聚在一起成千上万颗星聚在一起,形成形成一团星一团星,这就是星团这就是星团.银河系银河系里就发现里就发现10
9、001000多个这样的星团多个这样的星团.Stars第5页/共10页太阳系就是我们太阳系就是我们现在所在的恒星现在所在的恒星系统系统.它是以太它是以太阳为中心阳为中心,8,8颗行颗行星，至少星，至少165165颗已颗已知的卫星知的卫星,和数以和数以亿计的太阳系小亿计的太阳系小天体天体.Solar SystemSolar SystemSolar System is that we are Solar System is that we are the stars in our solar system.the stars in our solar system.It is centered on
10、 the Sun,and It is centered on the Sun,and 8 Planet at least 165 known 8 Planet at least 165 known moons,and billions of solar moons,and billions of solar system small body.system small body.第6页/共10页The Milky WayThe Milky WayThe Milky Way Galaxy is the The Milky Way Galaxy is the Galaxy star system
11、where the Galaxy star system where the solar system,including 120 solar system,including 120 billion stars and plenty of star billion stars and plenty of star clusters,Its more than 100,000 clusters,Its more than 100,000 light years in diameterlight years in diameter（直径）（直径）,Center thickness of abou
12、t Center thickness of about 12,000 light years.12,000 light years.银河系是太阳系所在的恒星系统银河系是太阳系所在的恒星系统,包括一包括一千二百亿颗恒星和大量的星团、星云千二百亿颗恒星和大量的星团、星云.它它的直径约为的直径约为100,000100,000多光年多光年,中心厚度约为中心厚度约为12,00012,000光年光年 第7页/共10页Galaxies,is the stars in the universe“Galaxies,is the stars in the universe“island”,it is one of
13、 the largest and island”,it is one of the largest and most beautiful celestial systemmost beautiful celestial system（天体（天体系统系统)in the universe.To date,about in the universe.To date,about 100 billion galaxies have been 100 billion galaxies have been observed in the universe.Some of observed in the un
14、iverse.Some of them we have close,some very far them we have close,some very far away,the furthest galaxy known away,the furthest galaxy known today almost 15 billion light years today almost 15 billion light years away from us.away from us.星系星系,是宇宙中庞大的星星的是宇宙中庞大的星星的 岛屿岛屿,它也是宇宙它也是宇宙中最大、最美丽的天体系统之一中最大、
15、最美丽的天体系统之一.到目前为止到目前为止,人人们已在宇宙观测到了约一千亿个星系们已在宇宙观测到了约一千亿个星系.它们中有的它们中有的离我们较近离我们较近,有的非常遥远有的非常遥远,目前所知最远的星系目前所知最远的星系离我们有将近一百五十亿光年离我们有将近一百五十亿光年.GalaxiesGalaxies第8页/共10页SpaceSpace there is a difference between the there is a difference between the universeuniverse,the universe contains a,the universe contain
16、s a space.we are living in universespace.we are living in universe :The:The universe included all the planets,the universe included all the planets,the milky way,even we are all part of the milky way,even we are all part of the universe.The world we live in,there is no universe.The world we live in,
17、there is no question of living in space:Our Earths question of living in space:Our Earths land,oceans,air,these are not part of land,oceans,air,these are not part of the space,but Earth,you can basically the space,but Earth,you can basically say that all the planets,stars,plus the say that all the planets,stars,plus the sum of the space,it means the universe.sum of the space,it means the universe.第9页/共10页感谢您的观看！第10页/共10页