Time is a dimension like every other dimension. It is so commonly overlooked that it has caused us to come up with the "Big Bang Theory", and "Dark Matter" and "Dark Energy" to explain our Universe.
Nothing can travel faster than the speed of light. If you approach the speed of light, time for you moves incredibly slow. No one ever thinks in the reverse. How slow can someone go? Right now if you are on the equator sitting in your easy chair, you are actually moving approx. 1.3 million mph.
If you add up the motion of the Earth as it spins, the Earth rotating around the Sun, the Sun rotating around the galaxy. What if an object or person ever left the galactic orbit? Time is a creation of motion, so time would speed up incredibly fast. There has to be a limit to this. Once time speeds to a certain point (Incredibly fast) Time itself causes the object to move. (Nothing in the universe can be completely motionless and still or time would come to a stop and that object would cease to exist)
So time is actually the thing that is causing the universe to expand, it is the "Dark energy" that we cant seem to find. The Big Bang Theory is partially true, but time itself is the thing that began, so the small dense universe had to start moving, expanding.
If there are any physicists out there, plug time into your equations, and soon you will find that everything starts to fit together.