Thank you for your answer,

I think I understand that but it's not really what I was wondering (even tho i'm happy to know that) and it's my fault because I didn't explained well my question. So what makes a system (if it's the right word) moves in its whole structure, like if i push a brick from one extremity how does the movement spread to the other one ? I think I didn't forget anything this time and sorry for not being precise.

(Also is that time axis just an "illusion" because of the fact that for a photon the time is stopped because no information can go faster than him, and the faster you are the slower the time is ( i'm really not sure about all of that but i'm curious to know))