If we go forward in time by moving quickly to we return back when we stop?

Question

The was tests to show that when moving objects go into the future a couple of millisecond or more, when they stop moving do they stay in the future or do they return back to normal????

Answer 1

They do not go "back into the past" a couple of milliseconds upon stopping, if that is what you mean.

When they say that a fast moving object (say, an astronaut) travels into the future, what it means is that the moving object ages at a slower rate than non-moving things.  When the astronaut returns to earth, and his clock reads "x" hours, the clocks that stayed on earth will read "x" hours plus a fraction of a second.  It can therefore be said that the astronaut traveled a fraction of a second into the future.

But once he's back on the ground, his clock and the other ground-based clocks will tick at the same rate.  Unless he actually synchronizes his clock to the ground-based clocks, his clock will continue to be a fraction of a second ahead of the others.