What Causes Time Dilation Between Two Objects?

[Z-one]

I have been curious about the concept of time dilation.

what is it exactly? and I am not talking about how it occurs, but the force that exist that makes it change or alter the similar state between two objects in two different places.

example would be the twin paradox or the Muon tests.

what is actually causing the difference?

 

[George Jones]

Have a look at

https://www.physicsforums.com/showthread.php?t=417409.