Recently the science community has been fascinated about the gravitational wave. It was observed by a research team for the first time. The team leader said that the possibility of error was zero. At first I was attracted by the sound of gravitational wave. It was a simple ‘poof’, sounding very naive. Then I watched a video introducing it and found the work very great.
The theory of gravitational wave was proposed by Einstein. He assumed that an object would cause its near space distorted just like the case when we threw a ball onto a large sheet. As a result, other smaller objects would travel on a curly orbit around it and the attraction between the two objects is called gravitation. The gravitational wave is the ripple of the plane in the process of attracting between two objects. It is so tiny that it’s hard to observe it. Only in an acute universe activity such as the absorption of two black holes may it be observed. For a long time the research team has sent laser on four-thousand-miles-long fibers in two different directions and reflected it . Most of the time the received laser and the sent one were the same, but one day they luckily found a very tiny difference in both directions, which was later proven to be gravitational wave.
If the laser was not affected by the environment, the result was encouraging. It was a powerful verification of Einstein’s theory and was helpful for further research. It reminds me of the famous sci-fi novel ‘Three Body’, which was written by Chinese writer Liu Cixin. It tells a story of outer space discovery. Mr. Liu supposed that there were lives on another planet. Because there were three suns on the planet, the weather there was irregular, and people can’t predict it. The civilization was often destroyed suddenly by the bad weather, which was either extremely hot or extremely cold. The story was based on the question of the gravitation between three objects. Until now the question has not been thoroughly solved and the law has not been totally found. The known universe around us, for example, the relation of Sun, Moon and Earth is the special solution of the question, so the travelling orbit and the weather of the Earth have been known. Since the gravitational wave has been found and more attention is paid to gravitation question, I hope that gravitation question of three objects will be discussed more and maybe some further results will be obtained.
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