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16.Inthelate1920s,Hubblestudiedthemovementofgalaxiesthroughspace.Hisinvestigationledt...
16.In the late 1920s, Hubble studied the movement of galaxies through space. His investigation led to the most important astronomical discovery of the 20th century—the expanding universe.
Earlier observations about the movement of galaxies had been done by V. M. Silpher. He discovered that galaxies are moving away from Earth at speeds between three-hundred kilometers a second and one-thousand eight-hundred kilometers a second. Hubble understood the importance of Silpher's findings. He developed a plan for measuring both the distance and speed of as many galaxies as possible. With his assistant at Mount Vilson, Milton Humason, Hubble measured the movement of galaxies. The two men did this by studying what Hubble called the "red shift." It also is known as Doppler effect.
The Doppler effect explains changes in the length of light waves or sound waves as they move toward you or away from you. Light waves speeding away from you will stretch into longer wavelengths. They appear red. Light waves from an object speeding toward you will have shorter wavelengths. They appear blue.
Observations of forty-six galaxies showed Hubble that galaxies were traveling away from Earth. The observations also showed that the speed was linked directly to the galaxies' distance from Earth. Hubble discovered that the farther away a galaxy is, the greater its speed. This scientific rule is called Hubble's law.
Hubble's discovery meant a major change in our idea of the universe. The universe had not been quiet and unchanging since the beginning of time, as many people had thought it was. And that, Hubble said, meant it probably began with an explosion of unimaginable force. The explosion is often called the Big Bang.
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Earlier observations about the movement of galaxies had been done by V. M. Silpher. He discovered that galaxies are moving away from Earth at speeds between three-hundred kilometers a second and one-thousand eight-hundred kilometers a second. Hubble understood the importance of Silpher's findings. He developed a plan for measuring both the distance and speed of as many galaxies as possible. With his assistant at Mount Vilson, Milton Humason, Hubble measured the movement of galaxies. The two men did this by studying what Hubble called the "red shift." It also is known as Doppler effect.
The Doppler effect explains changes in the length of light waves or sound waves as they move toward you or away from you. Light waves speeding away from you will stretch into longer wavelengths. They appear red. Light waves from an object speeding toward you will have shorter wavelengths. They appear blue.
Observations of forty-six galaxies showed Hubble that galaxies were traveling away from Earth. The observations also showed that the speed was linked directly to the galaxies' distance from Earth. Hubble discovered that the farther away a galaxy is, the greater its speed. This scientific rule is called Hubble's law.
Hubble's discovery meant a major change in our idea of the universe. The universe had not been quiet and unchanging since the beginning of time, as many people had thought it was. And that, Hubble said, meant it probably began with an explosion of unimaginable force. The explosion is often called the Big Bang.
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16。 在1920年代末,哈勃望远镜研究了运动的星系在空间。他的调查导致了最重要的天文发现20世纪的宇宙膨胀。 早期的星系的观测运动已经通过v . m . Silpher。他发现星系正在远离地球之间的速度每秒三百公里和一千每秒公里。哈勃理解Silpher的发现的重要性。他开发了一项计划,以测量距离和速度都尽可能的尽可能多的星系。与他的助手Vilson山,弥尔顿Humason,哈勃太空望远镜测量星系的运动。这两人是这样做的:研究哈勃称为“红移。“这也被称为多普勒效应。 多普勒效应解释了变化的光波长度或声波作为他们走向你或远离你。光波超速远离你会延续到长波长。他们呈现红色。光波从一个物体加速冲向你将有更短的波长。他们呈现蓝色。 哈勃的观测显示,星系46个星系远离地球的旅行。观测结果还表明,这个速度是直接链接到星系之间的距离。哈勃太空望远镜发现了,越远的星系是越大,它的速度。这种科学规则被称为哈伯定律。 哈勃的发现意味着一个重大改变我们宇宙的想法。宇宙不是一直保持平静和不变的时间开始以来的,因为许多人认为这是。并且,哈勃说,这就意味着它可能开始于一个难以想象的力量爆炸。爆炸通常被称为宇宙大爆炸。
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16。在1920年代晚期,哈勃研究星系的运动空间。他的调查导致了最重要的天文发现宇宙膨胀的第二十个世纪。
早先的意见,关于星系的运动已经完成silpher诉M。他发现,星系远离地球的速度之间三百公里一秒钟一千八百公里每秒。哈勃理解的重要性,silpher的结果。他制定了一个计划,测量距离和速度的尽可能多的星系。他的助手在vilson,密尔顿赫马森,哈勃测量星系的运动。他们俩是通过研究哈勃所谓的“红移”。它也被称为都卜勒效应。
都卜勒效应解释改变长度的光波或声波因为他们走向或远离你。光波加速远离你伸展成更长波长。他们出现红。光波从一个对象的加快对你会有较短的波长。他们是蓝色的。
观察显示四十六星系哈勃星系远离地球的旅行。观察还表明,速度是直接联系在一起的星系与地球的距离。哈勃发现一个星系距离越远,它的速度就越大。这一科学法则被称为哈勃定律。
哈勃发现意味着一个重大的改变我们的想法的宇宙。宇宙不安静不变的时间开始以来,很多人认为这是。而且,哈伯说,意味着它可能开始爆炸的不可思议的力量。爆炸通常被称为宇宙大爆炸。
应该是这样翻译吧?原文太长了,有没积分?
早先的意见,关于星系的运动已经完成silpher诉M。他发现,星系远离地球的速度之间三百公里一秒钟一千八百公里每秒。哈勃理解的重要性,silpher的结果。他制定了一个计划,测量距离和速度的尽可能多的星系。他的助手在vilson,密尔顿赫马森,哈勃测量星系的运动。他们俩是通过研究哈勃所谓的“红移”。它也被称为都卜勒效应。
都卜勒效应解释改变长度的光波或声波因为他们走向或远离你。光波加速远离你伸展成更长波长。他们出现红。光波从一个对象的加快对你会有较短的波长。他们是蓝色的。
观察显示四十六星系哈勃星系远离地球的旅行。观察还表明,速度是直接联系在一起的星系与地球的距离。哈勃发现一个星系距离越远,它的速度就越大。这一科学法则被称为哈勃定律。
哈勃发现意味着一个重大的改变我们的想法的宇宙。宇宙不安静不变的时间开始以来,很多人认为这是。而且,哈伯说,意味着它可能开始爆炸的不可思议的力量。爆炸通常被称为宇宙大爆炸。
应该是这样翻译吧?原文太长了,有没积分?
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