Cosmos and galactic systems are complicated more than we see
Time and goals or locations that we are going to... must be clearly defined
If calculated incorrectly, it will made us long lost in space and we can't return
During the travel...we will find something that are similar sliding doors. There is a need to wait or rest until the time is calculated.
The cabin or spacecraft does not move, but the moving is the outer space.
Similar a lift door of the building that will take us in each floor, the elevator room is not move, but the floors of the buildings are move up and down
