科普英语PPT课件

1、The universe is space, time, matter and energy, the unity of composition. All space and time integrated. A general understanding of the universe that we exist in a space-time continuous system, including during all of the material, energy and events. The universe according to the big bang model proj

2、ections, the age of the universe is about 20000000000 years.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 w

3、ork suggests the molecular building blocks that form the left-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 phy

4、sically exists: the entirety of space exists: the entirety of space 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. Ho

5、wever, the term Universe may be used in slightly Universe may be used in slightly 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MercuryVenusEarthMarsJupiterSaturnUra

6、nusNeptune第3页/共10页Planetary system is the most basic of universe。 There are eight planets in the solar system .Planets have the satellite, a satellite of the Earth : the Moon, there are other planets 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,

7、 ,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StarsliketheSunisitselfabletoemitlightandheattheplanet.Wehavemorethan100billionstarswithintheMilkyWayGalaxy.Ifeventhousandsofstarstogethertoformastar,thisisthecluster（星团）.Theyfoundthatmorethan1000suchclustersint

8、heMilkyWayGalaxy. 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10001000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

9、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 the stars in our solar system. It is centered on the Sun, and 8 Planet at least 165 known moons, and billions of solar system small body.第6页/共10页The Milky WayThe Milky WayThe Milky Way Galaxy is the Galaxy star system where t

10、he solar system, including 120 billion stars and plenty of star clusters, Its more than 100,000 light years in diameter（直径）（直径）, Center thickness of about 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12,000

11、12,000光年光年 第7页/共10页Galaxies, is the stars in the universe “ island ”, it is one of the largest and most beautiful celestial system（天体（天体系统系统) ) in the universe. To date, about 100 billion galaxies have been observed in the universe. Some of them we have close, some very far away, the furthest galaxy

12、 known today almost 15 billion light years 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,它也是宇它也是宇宙中最大、最美丽的天体系统之一宙中最大、最美丽的天体系统之一. . 到目前为止到目前为止, ,人们已在宇宙观测到了约一千亿个星系人们已在宇宙观测到了约一千亿个星系. . 它们中有它们中有的离我们较近的离我们较近, , 有的非常遥远有的非常遥远, ,目前所知最远的星目前所知最远的星系离我们有将近一百五十亿光年系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 universeuniverse, the universe contains a space. we are living in universe : The universe included all the planets, the milky way, even we are all part of the universe. The world we live in, there is no question of living in spa