Does our universe have a 4th dimension?

Before a little more than a century ago, time was thought to be an independent variable that flowed from the past to the future at the same rate for every individual, and this was the basis upon which Isaac Newton based his laws of motion. The universe was thought to consist of three dimensions of space.

The theory of relativity was founded on the discovery in the late nineteenth century that this model was flawed and that time does not flow at the same rate for all people.

According to relativity, time is the fourth dimension in a four-dimensional spacetime universe, meaning that space and time are interconnected.

The peculiar consequences of relativity include the following: time slows down with increasing velocity and increases with gravitational field strength.

We must now consider that events are positions in four-dimensional spacetime, and that time is moving faster than light for all of us!

Yes, our universe is commonly described as having four dimensions, including three spatial dimensions (length, width, and height) and one temporal dimension (time).