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The arrow of Time

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                                                   The arrow of Time                          Hello friend, have you ever thought why we are able to remember our past only. Why the time goes to end? We have some scientific theories to understand this system.               In the universe, there are at least three arrows of time- 1. Thermodynamic arrow of time. 2. Psychological arrow of time. 3. Cosmological arrow of time. Thermodynamic arrow of time: It is something related to the second law of thermodynamics which says that the entropy of a system always increases. And there present many disordered states than ordered once. Suppose you have a jigsaw in a box. There is only one certain ordered state o...
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Unanswered questions of the Universe

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Unanswered questions of the Universe 1. Why was the early universe so hot?                   According to the hot big bang theory , our early universe had too much temperature. Universe existed in a point with too much density. But if one asks why the universe was so hot, we are blank. 2. Why does the universe look same in all directions? Why is the universe so uniform? Why is the temperature same in whole universe?                    Hot big bang theory says when the big bang would have occurred, universe started expanding with so high speed that even light had not enough time to reach from one point to another. And according to the theory of relativity, if light is unable to go from one point to another, no other information can. So how can the temperature be same? Some people give a sugg...
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The No Boundary Condition Of The Universe

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The No Boundary Condition Of The Universe                             Hello friends, in this blog we will discuss on the no boundary condition of the universe. At first, I would like to introduce you from the topic. No boundary condition means a limited space-time. Actually we have some theories that predict the starting of the universe. Let’s discuss on it-                           If we talk about the classical theory of gravity, we find that there are only two ways of starting of the universe, either with the starting of time or with infinite time. But if we talk about the quantum gravity , it shows another way of beginning of the universe, in which the time direction is on same footing as directions in space, it is possible for space-time to ...
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