# Is the fabric of space time 2d or 3d

In summary, space-time is a 4D concept, but we usually represent it in 2D for visualization purposes. All radial directions in space are the same, so there is no "lower than earth" in space. We can see a visual representation of space-time along the radial line through videos and animations.
Well when I watch movies I see space time as 2d. But how do we see the space time from Earth to a region lower than earth.

Well when I watch movies I see space time as 2d.
Space-time is 4D. But we cannot visualize this, so we usually just show a 2D slice, with the relevant dimensions.

But how do we see the space time from Earth to a region lower than earth.
There is no "lower than earth" in space. All radial directions (away from the center) are the same. Space-time along the radial line looks locally like shown here:

At a larger scale like this:

## What is the fabric of space-time?

The fabric of space-time is a concept in physics that describes the four-dimensional continuum in which all objects and events exist. It combines the three dimensions of space with the dimension of time.

## Is the fabric of space-time 2D or 3D?

According to Einstein's theory of general relativity, the fabric of space-time is four-dimensional, meaning it has three dimensions of space and one dimension of time. Therefore, it is not accurately described as being either 2D or 3D.

## How do we know that the fabric of space-time is not 2D?

Scientists have conducted numerous experiments and observations that confirm the existence of the three dimensions of space and the dimension of time. Additionally, Einstein's theory of general relativity has been extensively tested and has proven to accurately describe the fabric of space-time.

## Why is the concept of a 2D fabric of space-time often discussed?

The concept of a 2D fabric of space-time is often discussed in popular culture and media as a simplified explanation of the complex concept of space-time. However, it is important to understand that this is not an accurate representation of the fabric of space-time according to current scientific understanding.

## Could there be more than four dimensions in the fabric of space-time?

Some theories, such as string theory, propose the existence of additional dimensions beyond the four dimensions of space-time. However, these theories have not yet been proven and are still being studied and debated among scientists.

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