Until then, the story of our universe, its beginnings and whether it has an end, will continue to be debated. To our small world the vastness of the universe seems infinite, without an end in sight or in our imagination. Steinhardt and Turok worked together on some early versions of the Big Bounce model, in which the Universe shrunk to such a tiny size that quantum physics took over from classical physics, leaving the predictions uncertain. It's incredibly ordered and regular and requires very few numbers to describe everything.”, Our forward-time flowing universe could have a perfect reflection that also extends out in reverse from the event we call the Big Bang (Credit: Alamy). Last I read, it appeared that it was impossible to create a completely convincing simulation of the Universe. A infinite universe, with infinite matter implies infinite possibilities. I asked this last night but didn't get much of a response. With this in mind, Turok sees no place for a multiverse, higher dimensions, or new particles to explain what can be seen when we look up at the heavens. “The main reason that it didn't die at birth is that it was the only thing people could think of to explain what they call the ‘scale invariance of the Cosmic Microwave Background temperature fluctuations’.”. But it seems to fit the data pretty well, and is what most people would say is most likely.”. Radiation burst out in every direction, and the Universe was on its way to becoming the lumpy entity we see today, with vast swaths of empty space punctuated by clumps of particles, dust, stars, black holes, galaxies, radiation, and other forms of matter and energy. Shredded and extruded back into our container Universe. Archived. So what are your thoughts? (There might even be a “mirror you” pondering what life looks like on this side.). The usual story of the Universe has a beginning, middle, and an end. “It’s the only particle on that list (of particles in the Standard Model) that has the two requisite properties that we haven't directly observed it yet, and it could be stable,” says Latham Boyle, another leading proponent of the Mirror Universe theory and a colleague of Turok at the Perimeter Institute. The Universe will become a cold, uniform soup of isolated photons. This is one big motivation for some recent finite universe models, e.g. But more recently, another of Steinhardt’s collaborators, Anna Ijjas, developed a model in which the Universe never gets so small that quantum physics dominates. The Big Rip is considered possible. The pattern for this is Jesus Himself. Physicists have been examining the ‘many worlds’ or infinite universe theory for decades, and one expert believes it could be the key to life after death. However, scientists think that the universe is flat like a pancake. Every time something happens, there is a new branch created. Multiverse bombshell: There could be infinite versions of YOU, Time travel breakthrough: Experts solve paradoxes of time travel, Life after death is REAL if infinite universes exist, physicist claims, Infinite universe could provide life after death, ‘No white lights or angels’: THIS is what happens when you die, Life after death: Man believes he visited the AFTERLIFE, "Sooner or later a copy of myself will be realised somewhere else.”, “There may have been many big bangs, not just one. IF the universe is infinite Thread starter Oldfart; Start date Sep 23, 2010 Sep 23, 2010 That’s possible but not likely. Posted by. Many competing Big Bang alternative stem from deep dissatisfaction with the idea of cosmological inflation. Neil Turok has also been exploring another avenue for a simpler alternative to inflationary theory, the “Mirror Universe”. Both possibilities have mind-bending implications. Sort by: Top Voted. Like the Big Bounce, it involves a universe that might have existed forever. “Of course some information of my existence will survive for some time in a similar way as paleontological traces of past life are still visible. But rather than being the beginning of space and time, that was a moment of transition from an earlier phase during which space was contracting. Both possibilities have mind-bending implications. – user2735 Nov 26 '12 at 22:09 If the universe is infinite, and there is a possibility different from zero for us to find ourselves not been contacted by our doppelgänger yet, then that scenario is happening just right now, with 100% of certainty. It’s not a particularly dramatic ending, although it does have a satisfying finality. Therefore we live in a special time – the only time in history when we may be scientifically certain of both the beginning and the end of the universe. The Mathematical definition of ‘Infinity and beyond’ has all the Maths Experts scratching their heads …. For starters, the fact that we know the observable universe to be 93 billion light-years across is astonishing — that’s a great story in itself, and you can read about it extensively here — but how do we know it? “At large scales, it is not chaotic. In every direction scientists point a radio telescope, the CMB looks the same, even in regions that seemingly could never have interacted with one another at any point in the history of a 13.8 billion-year- old universe.Â, “The CMB temperature is the same on opposite sides of the sky and those parts of the sky would never have been in causal contact,” says Katie Mack, a cosmologist at North Carolina State University. "If time is infinite," Time is finite. This is the currently selected item. The universe we live in may not be the only one out there. These are 2 separate questions, and must be answered individually: 1.  “That’s the number of years or more for the really big ones to finally evaporate away. “The theory is completely indecisive,” says Steinhardt. The remainder seems to be made up of something we cannot currently see – dark matter. I have a hard time believing that the universe is infinite. Well, the story starts out with an Austrian mathematician and physicist called Christian Doppler. With a bounce rather than a bang, Steinhardt says, distant parts of the cosmos would have plenty of time to interact with each other, and to form a single smooth universe in which the sources of CMB radiation would have had a chance to even out. “As we develop new theories and new models of cosmology, those will give us other interesting predictions that can that we can look for,” says Mack. First, the observable universe is the one we have size estimates for, because I repeat, we don’t even know if the entire universe is infinite or finite, so size measurements don’t make any sense. This Big Bounce model says this is how the Universe must be.”. Are there different kinds of infinite universes? Mass and energy would be so diluted that it will be very empty, close to absolute zero Kelvin temperature with the occasional lonely particle flying about. Donate or volunteer today! So there would be an infinite number of galaxies and planets in an infinite universe. “Hopefully it will be possible in the future to clone our minds but it is rather a kind of science fiction as this cloning will be never perfect due to possible quantum processes in our minds, impossible to reproduce. Or, it could be more like a point of reflection, with a mirror image of our universe expanding out the “other side”, where antimatter replaces matter, and time itself flows backwards. For the first 380,000 years of the current aeon, these would have been nothing more than tiny points in the cosmos, but as the Universe has expanded, they would appear as “splotches” across the sky. 4 years ago. Our mission is to provide a free, world-class education to anyone, anywhere. For the next 380,000 years, the Universe was so dense that not even light could move through it – the cosmos was an opaque, superhot plasma of scattered particles. Since there "infinite" possible Earths, there are infinite possibilities for humans there, wouldn't that mean, that ultimately, there IS an Earth(if Universe is infinite) that basically EVERYTHING is the same as our Earth? But even with tweaks like this, inflation makes predictions that have, at least thus far, not been confirmed. To mark the end of a turbulent year, we are bringing back some of our favourite stories for BBC Future’s “Best of 2020” collection. Discover more of our picks here. I agree that it is likely that intelligent life will be around for many millions of years more, but eventually the universe will kill us all. We will use your email address only for sending you newsletters. Penrose has been working with Polish, Korean and Armenian cosmologists to see if these patterns can actually be found by comparing measurements of the CMB with thousands of random patterns. I have a theory on life and death: if the universe is infinite and never ending, then the same thing has to happen over again, eventually. Our expanding universe could start to contract, returning to that dense state and starting the bounce cycle again.”. No matter if the Universe is infinite in time and space, nothing impossible can occur. In fact, our universe could be just one of an infinite number of universes making up a "multiverse." Do the numbers of galaxies, and even of universes, have no end? For example, take lotto numbers. 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