Edge of the universe

How about this, what is the difference between an ever expanding sphere and one that never grows on the outside but always on the inside? They would both hold the same volume but only one becomes more dense as time moves on.

The wave at the "front" of the big bang would be the "transition point" of where "nothing" gets filled with "something". In my mind though the front of the big bang is no longer the edge of the universe. After some amount of time the edge would have to be traveling faster than the speed of light so it would leave the wave at the edge of the big bang event behind.

Of course I also think that the universe is just "filling in" the void that our universe is in and that most of what happens along the edge is nothing but the cooling down of the wavefront.

 

void, the same as what's behind it. It's not making new stars and laying out new clouds of gas as it travels along. At least not that I've heard. By now the wave is cool enough that it has the same effect as sending a radio signal out, it just keeps on going.

then each of those universes would be a sphere that is growing larger in the sea of "something". I think this is close to what I think is true but rather than thinking of a "sea" (as in one dimensional plane) just put the void as a sea that has unlimited depth and width to it and the universes are "floating" in it. Like a rock with some wood attached to it, it floats not at the bottom or at the top but somewhere in the middle and just one of many.

Of course I also don't picture our universe in this void floating anywhere close to any other universe. I think that they (the universes) are so spread out from each other that they (the universe) would die off before they would touch.

Basically I think the wave at the front just heats up the void a little bit as it travels along. It doesn't do anything else so it doesn't need to create anything or do anything special other than go outward. Eventually it will have traveled so far that the heat contained in it will have dissipated.

 

I think it did at the beginning of the big bang. Of course I also think there was several things being "introduced" back then. It starts with a lot of energy and heat, as matter (the 4% we can see) is created the energy level drops and as the wave expands the heat is dissipated into the void as it passes through.

does left take up the space that forward does? I would think the answer is no but I also think if there are any dimensions we in-between then saying that one takes up the other isn't a valid statement. Of course I also can't see how a dimension could be outside of our universe. One would have to contain the others and then it would be a question like I started with.

if it's expansion then our universe would have to be expanding into that universe also. I can't see where our universe would be "outside" of a particular dimension, then once a particular size is reached it would grow into a new dimension. Well I could but I think it would also mean that our physical universe is of limited size also (to force the growth into another dimension rather than continuing on in ours.)

 

The edge of the Universe is nothing more than as far as light has been able to travel in the lifespan of the Universe.

It's not that there's anything out there, but it's also not that there's not anything out there.

And nothing "new" is being created out there.

There may be matter that current exists moving into that space, but beyond the edge of the Universe is just empty space waiting for the ever expanding sphere of the earliest light of the Universe to get there - then it will be part of the Universe - even if there is nothing for that light to reflect off of.

It's not any different than the empty space we live close to, except that it's totally empty and if you could instantly teleport there, it would be completely dark and if you were close to the edge of the Universe, you could watch the big-bang happen.

Being beyond the edge of the Universe looks exactly like what the Universe looked like prior to the big bang.


Edit to add:

It's the blank space on a new infinite sized Harddrive that the porn-folder known as the Universe has not filled yet.

 

Just curious, what is the space that exists between planets? Is there something there? Or is there just "nothing" between planets.

The space that lies between points that atoms occupy, is that also "nothing" ?

If planets are seated in nothing, couldnt the universe be seated in nothing as well? surrounded by other universes seated in the same "nothingness"?

 

Thats what the red blood cell said when it left the body through a cut

 

The space walks will be necessary for astronauts to install new scientific instruments to enhance the telescope. In a sense, the cosmic horizon is like a massive event horizon of a black hole, where the red shift becomes infinite and time comes to a complete stop.

 

Dark matter is more than a simple theory, we basically know it exists and that it accounts for 23% of the energy in the universe, dark energy taking up 72% and normal matter taking up 4%. We can observe the phenomenon of dark matter by looking at other galaxies. One would assume that a galaxy would have most of its mass in the center, and according to Kepplers 3rd Law this would mean the extremities of the galaxy would be moving slower than the center, which is not true. There must be invisible dark matter present.

Another way to observe dark matter is through gravitational lensing. Take the Hubble Deep Field photo for example. One can see the bending of the light given off by galaxies surrounded by nothing. Infact they are surrounded by invisible dark matter which uses gravity to bend the light.

In response to the OP, current cosmetologists believe there is no "edge" to the universe. Picture a balloon being blown up. Its surface is space-time, ever expanding from the Big Bang. There doesn't have to be a medium in which is expands, what you see is what you get

 

@MasterOG

I think it all depends on which theory you are reading. I think it's string theory that says our universe was created when two brains touched. That contact created the big bang and the "space" for it to grow in (and that's space as in room, not outer although both would be correct). In this case there wouldn't be an "outside" of the universe because the edge is where it "stops" (or "begins" depending on how you look at it), there wouldn't be anything past it because it hasn't yet been created. The brains would be in some higher dimension and the universe is formed in a lower dimension as a sort of pocket in the higher dimensions (where the contact was made).

I want to say that every universe that is created by the same two brains that made our universe, are all in the universe we see now just someplace so far away that we will never see it . This gets rid of the need of anything past the "edge" because the only edge is the wavefront that is traveling along and all that is is heat and energy (now more heat than energy). Beyond the wavefront would just be the same as the average place in the universe.

Here's a video that talks about the average place in the universe. It also talks about some other interesting stuff but the main point is about the avg place in the universe.

David Deutsch on our place in the cosmos | Video on TED.com

Here's another video, about 6 mins in he talks about this subject:

http://www.ted.com/talks/martin_rees_asks_is_this_our_final_century.html