[#, #, #]

[Port]

it's always the "x and y coordinate plane"
On that plane (which you find written on a whiteboard) y is literally up pointing towards the ceiling
When they add z, the only place it can go is out from the whiteboard

What if your space is a piece of paper lying on a table?

[Ad Bot]

[$trinick]

What if your space is a piece of paper lying on a table?

This is what I was gonna say. I always saw graphs on paper on a table, so I perceived Y as going out from me.

[BluetoothBoy]

Define up in real life.

You can't. The earth is spherical, your up is down for people on the other side of the planet. We cant (and dont) have a coordinate system for real life that isn't relative to something else.

Um...

Ever heard of relativity?

[$trinick]

A theoretical coordinate plane would be relative to something else, and is just that, theoretical. It wouldn't be a real thing, just something that humans have created to help work things out.

There is no defined 0, 0, 0 of existence, although I suppose you could argue that the big bang is, if you believe in it, or perhaps there is something that we haven't discovered yet.

I don't understand you at all. You're saying this like that disqualifies coordinate planes from existence. In real life people use coordinate planes to indicate relative forward/back, relative left/right, and relative up/down. Usually, these people mark relative left/right as X, relative forward/back as Y, and relative up/down as Z.

[Ipquarx]

if the big bang theory is real, then it probably will be defined as 0, 0, 0, but I doubt that it would give us a direction for x y and z..

Of course there's a centre of the universe. We just haven't found the edges, and that means we can't find the centre.

[$trinick]

Of course there's a centre of the universe. We just haven't found the edges, and that means we can't find the centre.

Well.. the shape of the universe kind of dictates the lack of edges. A better way to find the center of the universe is to calculate the angle and speed at which every galactic supercluster we can see is moving away from eachother, it'd be like tracing a bullet back to the point it was shot from.

[Xalos]

Well.. the shape of the universe kind of dictates the lack of edges. A better way to find the center of the universe is to calculate the angle and speed at which every galactic supercluster we can see is moving away from eachother, it'd be like tracing a bullet back to the point it was shot from.

Good luck.

[$trinick]

Good luck.

Lol, this is true but that doesn't mean there aren't ways for us to see how fast other objects are moving away from each other. Sure, if you sat on the earth and pinged the distance to other objects constantly you'd get the effect of them moving away from us, but that's why we don't take measurements of distance that way.

[Xalos]

Lol, this is true but that doesn't mean there aren't ways for us to see how fast other objects are moving away from each other. Sure, if you sat on the earth and pinged the distance to other objects constantly you'd get the effect of them moving away from us, but that's why we don't take measurements of distance that way.

...I don't think you actually understand. The center of the universe is nowhere and everywhere because everywhere has an equal claim to being the center of the expansion.

Also if we "pinged" the distance to other objects we would never see the echo.

[$trinick]

That's incorrect, there is an origin of the universe and it is the location of the big bang. All objects are moving away from this origin at a similar pace. The cosmological principle doesn't state that there is no center of the universe-- that's this guy's attempt at simplifying it for a more general audience. His balloon explanation is pretty much perfect. If you were to glue skittles onto the outside of a balloon and blow it up, you could watch as the skittles were pushed further and further away. If you measure the distance between any two skittles, it will always increase because they're both on the edge of this expanding shape. However, that doesn't mean there's no center, the center is easily calculable by measuring the balloon. Since the balloon also expands at a set pace, it's possible to account for this growth and find the real velocity at which the object is moving.

Also, I wasn't using the term ping as a literal signal ping. Ping also means to query, which is the way I was using it.

[XR-7]

If the Big Bang and a given time of trillions of years were real (which I personally don't believe in), there would probably be at any given second during that time for collisions to occur, which would make speed calculations inaccurate. Yeah, scientists can guess, but they probably won't even be able to make the origin within a 10¹⁴ distance if anything.

Way off topic...

[Ipquarx]

The reason we can't find the centre of the universe is because the observable portion of the universe is far too small for us to find the edges of the ENTIRE universe. In fact we never will, since the expansion of the universe is actually accelerating.

[XR-7]

The reason we can't find the centre of the universe is because the observable portion of the universe is far too small for us to find the edges of the ENTIRE universe. In fact we never will, since the expansion of the universe is actually accelerating.

Who knows, maybe there are more universes.

[$trinick]

If the Big Bang and a given time of trillions of years were real (which I personally don't believe in), there would probably be at any given second during that time for collisions to occur, which would make speed calculations inaccurate. Yeah, scientists can guess, but they probably won't even be able to make the origin within a 10¹⁴ distance if anything.

Way off topic...

Well, that would be true if you were measuring small objects like planetary clusters or even galaxies. However, when tracking absolutely immense objects like galactic superclusters, the small collisions inside don't carry enough weight to alter their trajectory by a notable amount. Kind of like how you jumping on earth doesn't push Earth down.

[Lugnut]

how the loving stuff did we get from javascript to the big loving bang

holy stuff

What if your space is a piece of paper lying on a table?

the first time you see it (assuming you went to school and didn't read it out of a book or something), it's written on a whiteboard
"ok class x increases going to the right, and y increases going up"