That's a one followed by zeroes, a number so vast that if every atom in our observable universe had its own universe and all of the atoms in all of those universes each had their own universe, and you repeated that for two more cycles, you'd still be at a tiny fraction of the total — namely, one trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillionth.
But even that number is minuscule compared to another number: infinity. Some physicists think the space-time continuum is literally infinite, and that it contains an infinite number of so-called pocket universes with varying properties. How's your brain doing? But quantum theory adds a whole new wrinkle. I mean, the theory's been proven true beyond all doubt, but interpreting it is baffling. And some physicists think you can only un-baffle it if you imagine that huge numbers of parallel universes are being spawned every moment, and many of these universes would actually be very like the world we're in, would include multiple copies of you.
In one such universe, you'd graduate with honors and marry the person of your dreams. In another, not so much. During this period of inflation , there were quantum fluctuations which caused separate bubble universes to pop into existence and themselves start inflating and blowing bubbles. Russian physicist Andrei Linde came up with this concept, which suggests an infinity of universes no longer in any causal connection with one another — so free to develop in different ways.
Cosmic space is big — perhaps infinitely so. String theory , which is a notoriously theoretical explanation of reality, predicts a frankly meaninglessly large number of universes, maybe 10 to the or more, all with slightly different physical parameters. TV Episode. Must Multiple Universes Exist? What would Multiple Universes Mean? How are Multiple Universes Generated? The Multiverse: What's Real?
Part 1. Part 2. Why Believe in Multiple Universes? How Did the Universe Begin? Eventually, any finite number of particle types must repeat a particular arrangement. Hypothetically, in a big enough space, those particles must repeat arrangements as large as entire solar systems and galaxies. So, your entire life might be repeated elsewhere in the universe, down to what you ate for breakfast yesterday. At least, that's the theory. But if the universe began at a finite point, as nearly every physicist agrees that it did, an alternate version of you likely doesn't exist, according to astrophysicist Ethan Siegel's Medium article.
According to Siegel, "the number of possible outcomes from particles in any Universe interacting with one another tends towards infinity faster than the number of possible Universes increases due to inflation. In a relatively recent addition to the pantheon of multiverse theories, researchers from the Perimeter Institute for Theoretical Physics in Waterloo, Ontario, have proposed that the universe began at the Big Bang — and on the opposite side of the Big Bang timeline, stretching backwards in time, a universe once existed that was the exact mirror image of our own.
That means everything — protons, electrons, even actions like cracking an egg — would be reversed. Antiprotons and positively charged electrons would make up atoms, while eggs would un-crack and make their way back inside chickens. Eventually, that universe would shrink down, presumably to a singularity, before expanding out into our own universe. Seen another way, both universes were created at the Big Bang and exploded simultaneously backward and forward in time.
Our universe grew exponentially in the first moments of its existence, but was this expansion uniform? If not, it suggests different regions of space grew at different rates — and may be isolated from one another. How are the laws of the universe so exact? Some propose that this happened only by chance — we are the one universe out of many that happened to get the numbers right.
What is beyond the edge of the observable space around us? No one knows for sure, and until we do which could be never , the thought that ou universe extends indefinitely is an interesting one. There is no way for us to ever test theories of the multiverse. We will never see beyond the observable universe, so if there is no way to disprove the theories, should they even be given credence?
0コメント