what is the proper way to look at the universe? is it 2D or 3D?

Question

because to understand worm holes I was told it is better to look at it in 2D.
But if i went to space would i be able to travel up down or just sideways, earth being the starting point

Answer 1

depends if you are looking at it relative from the inside or externaly. from internal, in respect to travel, it is best to view it as a rotational 3d, vector represented by polar coordinances in an occupied volume. but in respect to point to point as in a wormhole, would appear to an external observer, as theoretical point to point 2d demominshional warp plane, connected between any number of moving 3d volumes. theoreticly speaking once you enter a wormhole, you are at the mercy of the wormhole without up down, or side to side. your just going to pop out the other side using either to or fro only. with the only outstanding argument as: is it to(pushed), or is it fro (drawn), or accomplished gravitationaly by both. but if not by both, it would only be a one way trip, using either to or fro likened unto a space diode.

Answer 2

The reality is that the universe is multi-dimensional. Like you mention, you can go sideways, up-down, and forward-backward, providing 3 "geographic" dimension.

Additional dimensions can be time, gravity, or density. Often we will suspend one or more "geographic" dimensions, so we can visualize a different dimension in it's place, like time, gravity, or density.

Example: You've probably seen the graph of an object falling, where the altitude of the object increases exponentially. In that graph, we only have one geographical dimension (altitude), so that the other dimension represents time (height at 0 seconds, height at 1 second, height at 2 seconds, etc). The object falling has all 3 "geographic" dimensions (can go left, right, forward, and backward), but we often only visualize one, so we can visualize how the 4th dimension of time changes the dimension of altitude.

For space applications, sometimes it makes sense to use only two dimensions, so one can visualize the third dimension as something else, such as the heat energy of a star, or the gravitational pull from a black-hole, or anything else.

A star transmits heat energy in 3 dimensions, but drawing it in only 2 allows us to visualize how the energy is distributed (red hot near the center, and then cooler shades of blue further away). The same concept can apply to visualize gravitational pull, or anything else.

Hope this helps!

Answer 3

3d. as long as you can represent points in the x-y-z axis.. it is 3 dimensional

Answer 4

So far, cosmologists have hypothesized 11 or more dimensions. You and I can only perceive 4. Look all you want, but you'll never see it properly.