Question

if we move in twice the speed of light what will happen?​

Answer 1

In this case first of all our mass will decrease to quite a limit. As having a speed even comparable to tge speed of light makes the body lose mass.

Second time will slow down to quite a pace. Our perception of time will be very slow. For example 1 hour for us might be Years for others. This happens in conformity to the theory of relativity.

Also we might reach the edge of the universe since it's supposed to be expanding at tge rate of speed of light. So if we travel at twice the speed of light we might reach the universe's edge.Though it would take quite a humongous amount of time.

There will also be some perceptual changes for us.For example we will not be able to see anything since we are travelling faster than light therefore we will reach a place before light reaches and hence we will not be abke to see anything.

But at last all of these are hypothesis. Practically it's impossible to travel faster than the speed of light.If any particle shows a higher speed it would break down all the laws of classical Physics.