# Question on Time Dilation Experiment

1. Jul 23, 2011

### BobWylie

If time is slowed for an observer circling the earth and we put an observer on the earth, sun, center of the milky way and finally the center of the universe then would it be correct to say that time would be moving fastest for the observer at the center of the universe?
If so is it possible that the passing of time becomes infinite and how would matter exist or would only energy be present in such a place?

2. Jul 23, 2011

### bobc2

No. But, in any case you must tell us whose inertial system it is in which you wish to make observations. Every observer will observe that clocks run slower in all other systems moving relative to his own.

Also, how do you define or locate a unique center of the universe? It would depend on the universe model you select, but generally speaking every location in the universe has equal claim to being the center--or you could also say that there is no center of the universe. It is like looking at the surface of a sphere and asking, "Where on that spherical surface is its center?"

Do you mean time passing at an infinite rate? The premise is meaningless in view of response to first question. But, No.

Again the premise is meaningless. But, in any case, there is no place that is any different or special then any other...except for possibilities of certain black holes I suppose.

3. Jul 23, 2011

### bcrowell

Staff Emeritus
We have a FAQ about the center of the universe idea: https://www.physicsforums.com/showthread.php?t=506991 [Broken]

Last edited by a moderator: May 5, 2017
4. Jul 25, 2011

### BobWylie

I appreciate the quick response and please forgive me for being so general I am a layman. On the first question would time move faster at the center of the universe. In my mind the center of the universe would be the center of the big bang because from there everything theoretically originated and so (all things being equal) that point would not be moving in any direction in relation to what came out of the big bang. Now back to my reasoning for the first question I asked. The 1971 time dilatation experiment showed the clocks that traveled eastward were 40 nanoseconds behind the clock on the ground. So my thought is if this experiment was taken farther and a clock was put on the sun, center of the milky way and the center of the big bang then wouldn’t the clock at the center of everything be ahead of the clock at the center of the milky way and the milky way ahead of the sun and the sun the earth. So from the standpoint of someone on earth the stars would appear to move faster than for the observer at the center of the universe.