It has been started quite often that you can only determine if an object is moving relative to a point you select, and that space itself can not yield any such reference frame. Couldn't you, however, use the amount of time dilation experienced when moving in any given direction to narrow down an actual fixed reference frame within space? Sorry if there's a lot I'm missing, it just struck me as odd though I know there must be an explanation.
Couldn't you, however, use the amount of time dilation experienced when moving in any given direction
I apologise if I misunderstand you, but you won't notice any time dilation, you will, no matter your what velocity, always see time moving normally.
As far as you are concerned, it's everybody else who is moving relative to you, that has issues with time, but you won't feel any different, no matter what, when other people look at you and see that time is slowing down for you, compared to them, because you are moving faster than them.
So everybody moving in space thinks it's the other guy whose time is slowing down, and that they are operating normally.
If I could put it another way, you look up at a plane flying at 500 mph, and think, that plane is really moving, if you see it getting closer to a cloud. But when you are in the plane, you might feel turbulence up and down, but you don't feel any sense of moving forward, even though you are flying at 500 mph.