Multiverse madness

When doctor strange said that the Multiverse is a concept about which we know frighteningly little about, I took a second to relate it to the real life scenario.
Do we live in a multiverse? Daydreamers, science-fiction authors and geeks have pondered about parallel universes for as long as scientists have described our own.

Our universe contains everything we know — from planets, stars, and galaxies to space and time itself. And it’s truly gigantic in size, spanning some 93 billion light-years across, according to astronomers’ estimates.

That’s more than our species could ever hope to explore, and the thought of exploring itself is making my brain go boom.

But what if our universe isn't the only one? What if alternate universes are lurking in the shadows undetected, right "next" to ours?

Cosmologists call this idea the multiverse, and there’s good reason to consider the concept. Indeed, many of the best scientific models for the creation of our universe actually depend on the existence of a multiverse.

Some researchers base their ideas of parallel universes on quantum mechanics, the mathematical description of subatomic particles. In quantum mechanics, multiple states of existence for tiny particles are all possible at the same time a "wave function" encapsulates all of those possibilities. However, when we actually look, we only ever observe one of the possibilities. According to the Copenhagen interpretation of quantum mechanics we observe an outcome when the wave function "collapses" into a single reality.

But Some physicists believe in a flatter version of multiple universes. That is, if the universe that we live in goes on forever, there are only so many ways that the building blocks of matter can arrange themselves as they assemble across infinite space. 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 might exist, dual nature of matter of course

Theories that suggest alternate universes:

A multiverse could be teeming with other universes that are nearly identical to ours — or they could be unimaginably different. Either way, the realms of parallel universes open up many interesting possibilities, just imagine u getting to meet your own self from an another universe that would be so cool lol .

As many authors have written over the years, if there are infinite other universes, then there are at least some that contain doppelgängers of yourself. But these alternate versions of you also might experience an entirely different physical reality, as the laws of nature aren't necessarily the same for every universe.
The four kinds of parallel universes
a parallel universe could come in four different flavors(weird metaphor I understand lol).
A parallel universe could have nothing qualitatively new and different than our own universe.
A parallel universe could have totally different fundamental laws of physics.
A parallel universe could have the same fundamental laws of physics, but could have been started with different initial conditions.
A parallel universe could have the same fundamental laws of physics, but different bylaws.
Many scientists have dismissed the very idea of the multiverse over the years because of one simple fact If you can’t leave our own universe, then there’s no way to prove that any other universes exist this logic is pretty much stupid if you ask me, I strongly believe that just because you can't understand something that doesn't mean it doesn't exist.
However we don't have to agree with their statement

Hypothesis of a multiverse:
How would we prove that we live in a multiverse? If our universe collided with another, it would definitely offer some evidence, though it’s a big "IF" as whether would we be alive to study it, and some theorists have suggested that colliding universes could leave cold spots or hot spots(huge galaxy clusters and clouds of chilly gas) on the cosmic microwave background. If so, we should be able to detect those spots with advanced sky surveys.

Gravitational wave ripples in the fabric of space-time might also provide evidence to support the theory of cosmic inflation. The theory predicts that gravitational waves left over from the Big Bang could put tiny curls into the CMB, which some telescopes are actively searching for today.

If researchers can spot such curls in the CMB as they thought they did back in 2014 it could ultimately boost support for the idea that there’s another you out there Or, perhaps, not. Maybe we don’t each have countless extra-cosmic kin. And maybe that’s not such a bad thing ig
But as a guy living in earth prime, getting to meet my other self would be wicked cool.

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Ynot_Stark

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