Time travel ,a myth or is it possible?

Well talking about time travel , many scientists believe it is a myth and few believe there is more in the universe to be explored , some part of it completely unpredictable and uncertain.

We will try to analyse both things.

Time travel can be either travelling to our past or to our future, here the possibility of travelling to our past is very low, things happened in past cannot be explored again because the universe (spacetime)is expanding and time can never travel backwards in our universe. Travelling to our future is at the cost of attaining infinite energy.

If we would like to travel into our future we might have to travel with the speed greater than that of light speed,this is just an assumption to be considered.

In reality it's nothing but u can explore things before light could explore it. But travelling faster than speed of light requires infinite energy which is highly impossible to reach.

And also there is another possibility where our past, present and future co exists and our brain is the thing which is trying to differentiate it.

From understanding we have to think that time might not be manipulated,but it is the only true measure of everything around us .

Now what if we become really small like close to the size of electrons and neutrons, things become different , we are defined by a wave function and our existence is determined by probability, here talking about time travel could mean something , wave functions have states that can be altered and altering them can lead to reversing their state from one to other, time plays a different role here.

Time travel in quantum realm will be conitued...