Well, I wouldnt think it could be called universe if they found another one. They would have to make a new name for the ex universes and the new universe would be the combination of both, because universe means everything regarded as a whole. I guess I kind of sounded confusing with this last statement, but what I meant is that what we call universe at the moment would have to have another name, so that universe can be the combination of both, the actual and the newfound one. =b this is hard to explain.

The idea is getting stronger by the years, especially since the string theory was formulated. But the condition of the other universes is totally independent of our universe. No theory, mathematics or whatsoever could even start to speculate about their workings, since there is absolutely no reason for the laws of physics that rule our universe to apply to the rest of them. We can't even get the smallest of observations from any other universes, so it would be extremely far fetched to begin to speculate about their workings.
Concerning the inter-universe travel, no black holes or wormholes allow anything like that, since they are heavily (if not solely) depended on this universe's physics laws.

As for the time travel part (or the reverse time sequence), even this universe will probably reverse its time sequence if and when it starts shrinking. After all, what is time? Just the transition from the cause to the effect. If the uni starts shrinking, its entropy will reverse (that is the order of the universe will start to increase). This in itself will reverse one of the most fundamental physic laws (the 2nd thermodynamic law), probably resulting in reversing the cause to effect relation and thus the time sequence.

but what if instead of completely different universes what if there was parallel universes so that each decision that we make creates a parallel universe, but so there would be so many universes, and what if black holes were merely an alien device that requires so much energy that they needed to place the device in the middle of a supergiant or a blue giant, and it ultimately used up the star's resources so fast that only in a couple of billion years the star went supernova, but what if there was a second stage to the device a stage that would ultilize the power of a black hole, or even maybe generate a black hole? neutron stars maybe failed experiments.
So lets take wormholes, what if they were blackholes on a smaller scale, or what if the stuff that gets squashed into a singularity returns to its original form after it goes through to the other end, or what is black holes are like traps, designed to lure things into them so whatever lives on the inside captures it.
Or... it is a gateway to the heavens, in other words a gateway to another plane of existence.
Imagine what would happen if the subspace wormholes from different blackholes/wormholes crossed paths? could that create a tear in the universe itself?
could it be the end of the universe when wormholes are crossed? it would explain the infinite darkness.

Black holes are not gateways. Anything closing up on their center is destroyed, as it's turned into an energy-mass mush. And anyway, the energy-mass that enters the black hole could not be leaving it from someplace else, since this would empty the black hole from its mass, thus destroying it or at best averting the black hole from growing any bigger. But black holes are known to constantly become bigger and bigger up to the point where the mass loss from their event horizon due to the quantum effects becomes equal to the mass that is captured.
On the other hand, wormholes are something totally different from black holes. They do not pull things in them, they are just gateways to different places/time(?) in the universe. In fact, science knows how to create wormholes, it's just that the creation of one needs extreme amounts of energy. If I remember correctly, with the methods for producing negative energy known some years ago, the creation of a wormhole 1cm long with a diameter of 1m needed the energy that 100 billion stars like our own produce in a year (or in their lifetime, I'm not sure).

looking at the word... universe... you see that 'uni' meaning one, and would therefore answer your question there could not be more than one universe.... just as there shouldnt be more than one uniform... but many institutions have different uniforms for different seasons and situations. thinking this way, as we are here to do, it seems posible that there could be different universes existing under different circumstances. its a good point to bring up how small we are, with the millionth of a millionth statement, this imediately brought to mind fractals and the mandle brought set (sp is bad i know). in that thing the guy discoverd he found a (and feel free to corect me on this as i learned about it when i was 10 or so on the discovery chanel) costant repeating patern that is naturaly occuring.

based on this i started to think that ist posible that this patter which grows, is a never ending pattern. or at least it could be, and that by the time this parttern begins to form the things we can see and interact with the patern takes too long to repeat for us to ever notice it, unless we really stop and let the pattern go on for a while.

so, hummor me a bit in my attemp to keep my newly hosted site running, lets say i am correct, this pattern get bigger and bigger as it repeats and thus we have things faaaaaar larger than ourselves. and we get things like our planet, our sun, our solar system, and the universe as we know it. but thats another part of the pattern. what im thinking is eventualy things get a bit to big for us to interpet, infact this thing could be so big that its all around us all the time but we dont even notice it because its outside of the range of our perception.

this is usualy my problem with science, that it only works withing the confines of what we know and what we know we do not know.... but theres that big section of what we dont realize we dont know.... mind boggling really.

but the intresting part is, for me, in the essence of matter, energy... in my reserch of the bible, and of eastern thought the first common link i found was in the words describing breath, spirit and energy.... now i dont mean to get all god-talk on you guys but its relevant, trust me. these three words in japanese and in the bible can all be merged into one word, in japanese and chinese its ki and chi. in the bible the greek use spiritos. when translating a part of the bible that refered to the holy spirit i saw the word spiritos was used, which means breath.... thing back to eastern thought, the human spirit can be regulated by breath.... i thought it very intresting, but the part about energy is left out of my little loop of logic, and that is because that part start of with my thoughts about atomic and hydrogen bombs... how do they work exactly? isnt it that when a atom of some sort has its components split apart it releases an inconciveable amount of destructive force? this seemed very odd to me, how could such a small thing destroy so much... then i thought of what i had learned about waves, sound, radio, light, is all the same kind of wave, and whats a wave but a mere vibration? (once again feel free to corect me where i am wrong) then something hit me...according to legend who created the earth?god right? and who has acsess to tons and tons of energy? according to the bible, god does... then i thought of the atom bomb in reverse... oh *BLEEP*!, it was like those pictures of divideing by zero on 4chan...


that was quite a bit of crazyness there, but im goign to try and tie it all back in.... with this thought: what exactly constitues a universe...to us its the seemingly infinite void above our heads which other extremely smart people can only guess at, but to a micro organisim a universe could be the size of a flower petal... even more so, why does a universe have to be physical? how do we know there arnt forms of conscieness that can exist as patterns in wave form...

oh *BLEEP*... ive never thought this before.... damn.... any one ever seen the movie "white noise"? that was some really scarry *BLEEP*... i've never looked at a static screen the same since... or radio static... its really creepy.

the concept of the movie was based on real events, of people listening very closely to static on radios and telivisions. the idea was that spirits could actualy use natural patterns, as well as not so natural patterns to communicate with people. some people are said to have actualy made contact... but this seems to me to be the... fringe of our capability to accept and understand something outside of our own exsistance paterns. to us we are born, we live, fufill the pattern and then die.
just a micro organism will do whatever the *BLEEP* it does, it will never contemplate what difficulties males in our society have in finding a mate, it will never think of what could be outside of its point of view... but the crazy thing is that we as humans can! its posible for us to look into what seems beyond our normal human functions.

call it crazy talk if you want, but thats just the thoughts that have passed through my head and into my fingers... now im going to go to sleep and forget them. sad...

more than one universe
Can There Be More Than One Universe?

What is a universe. Is it a group of galaxies or every thing out there. I think there are a group of universes just like they are galaxies.So what are the group of universes called if they are any? just thinking

-tfinger

We can never know for sure if there is another universe, but we can see physic theories and try to understand them.

I think there is a possibility for a mirror (where opposite things of what happens here happen there) universe to exist parallel to ours. But since it's parallel we can never see it or even happen to be in it.

I voted yes

Parallel Universe
Can There Be More Than One Universe?

What if the parallel universe essentially "overlaps" our universe. Based on quantum mechanics, matter can have multiple existence. Our physical reality of a known quantum state may be coexisting with another physical reality in another quantum state. Frankly, I think the Big Bang is a Christian influenced science that everything started from a singular point. Before our universe, there was another universe that cooled off and after infinite time started expanding again. There may be multiple parallel universes overlapping each other, each one in some unknown thermodynamic state of their own. My 0.0002 cents, gravity is rotational centripetal flux caused by rotating objects. Since the universe began, everything is spinning. That's why gravity is unidirectional and points to the center of the mass creating it (e.G earth, sun, black hole) and related to rotational speed, density of the physical mass. The flux may be modern string theory.

-reply by crazylogic