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Curved spacetime and time dilation


 


Curved spacetime and time dilation 


Does the time dilation explain the problem with the estimation of the age of the universe? Sometimes I have thought is the time dilation in the young universe the reason, why the universe seems older, what cosmologists have predicted. At the beginning of the time, just after the Big Bang, the energy level in the young universe was extremely high. Also, the high energy level causes the time dilation in the particles where the radiation will impact.

  

Does the speed of the time or speed of the light change in the gravity field? Or does gravity affect both of those things? Spacetime and curved spacetime are things, that we always think that we can understand. Many times people are thinking that the curved spacetime means that every object, what has mass and gravity field are curving the spacetime, and that's it. 


The thing is that curving the spacetime would slow the time in that place and because the gravity affects the light, we can say that crossing the speed of light could be impossible but in some places in the universe light moves faster than in other places, but do you know, why the speed of light is cosmic constant? The thing is that in every place in the universe the speed of the light is the same, but the time moves slower in some places than others. The thing of how gravity affects time is called "time dilation". 


Many people are heard that the time is starting to move slower in the gravity field, but at this time we are meaning physics time. And in some models, the gravity will just increase the energy of atoms by pulling electrons near the nucleus. So that thing can be a result of the hits of gravitons the theoretical particles, what are transporting gravity. 


That causes increasing the mass and energy of the nucleus. So that makes researchers think that graviton is " black photon", or some kind of quark, what transport the gravity. Sometimes is introduced an idea, that graviton is the quark sized Black Hole, the extremely high-energetic subatomic particle. Or could the energy level of photon turn that thing to the graviton what is a tiny Black Hole, if we are supporting this theory? 


So the question is does the speed of light or the speed of time changing? The thing is that everything is relative to the universe. That means that even if the gravity will increase the speed of photons, it also increases the speed of other objects in the same way, and that makes this thing meanless. 

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