Marvel's Doctor Strange is an interesting fantastical take on the idea of the multiverse and
how magic binds them together if the multiverse does exist we can be sure that it will be physics
not magic explaining their existence however there is one alternate universe or dimension
that doctor strange may have predicted right the mirror dimension is a universe just like ours but
in reverse well at least in theory according to a new wild theory there may be another anti-universe
running backward in time prior to the big bang and if this is true we can perhaps
decode the mystery of dark matter once and for all but what makes them connected welcome the
Factnomenal and today let's find out if our universe truly has an opposite twin or not
it's been a week but you are still confused about where did that one hour go when daylight
savings happened well as stupidly confusing as the concept of daylight savings is we should
feel relieved that we do not have to live in what scientists are calling the anti-universe
from a physics point of view parallel universes are one of those
intriguing ideas that are imaginative compelling but very difficult to test
they first arose in the context of quantum physics which is notorious for having
unpredictable outcomes even if you know everything possible about how you set up your system
now think of a hypothetical mirror universe to the one we know and reside in but the time is running
freaking backward we can imagine this universe perhaps looking like mirror dimension in doctor
strange movies or upside down in the stranger things series but it will behave how time reversal
worked in Christopher Nolan's Tenure yep that very movie which most of us haven't yet figured out
don't try to understand it in tenet whenever John David Washington's unnamed protagonist traveled
in time he had to wear a special suit and oxygen mask because the polarity of the atmosphere was
reversed during the time running backward this is exactly what you can expect from the anti-universe
according to physicists there are three fundamental symmetries in the nature of
our universe charge parity and time flipping the charge of a particle in
a given interaction results in an equal and opposite charge similarly the mirror image
of a particle interaction will look the same as the original and time running backward will
create the same timeline of interactions only in a different order but the sequence won't change
according to scientists these three fundamental symmetries together
suggest the existence of a mirror universe that would be the exact opposite of ours
that means it would be filled with oppositely charged and mirrored particles that are going
backward in time interestingly if such a mirrored universe does exist it could shed light on one
of the biggest mysteries of our universe the ambiguity of dark matter dark matter makes up
27 of our universe and yet we know very little about it being completely invisible to us
mysterious dark matter is often credited for the inflation of our universe if this new theory is
accurate that would mean dark matter isn't all that mysterious but is just the new flavor of
a ghostly particle called a neutrino that can only exist in this kind of universe a neutrino
is a subatomic particle that is very similar to an electron but has no electrical charge and a very
small mass which might even be zero neutrinos are one of the most abundant particles in the universe
because they have very little interaction with matter however they are incredibly difficult to
detect the science community notes that there are only three known types of neutrinos that
are all left-handed meaning they spin to the left while all other known particles have both left and
right-handed variations that could mean there are right-handed neutrinos somewhere out there that we
can detect as scientists have suggested in the past these right-handed neutrinos would likely
be invisible but would nonetheless influence the rest of the universe when interacting with gravity
if symmetry exists everywhere else it would necessitate right-handed neutrinos in as great
in abundance as their left-handed counterparts this makes right-handed neutrinos an intriguing
candidate for dark matter the mysterious component of the universe whose existence
and gravitational influence are needed to fully explain the motion of stars within galaxies
our universe is constantly expanding and is full of many particles and phenomena that do a lot of
interesting things their activity in turn keeps the universe evolving and we perceive it as time
moving forward the concept of charge parity time symmetry demands that to maintain the balance
across the multiverse there should be an equal and opposite universe to balance our own this universe
would have all the charges opposite hours flipped in the mirror and run backward in time this would
make our universe just one of a pair of twin brothers what would be the consequences if this
is true first a universe that respects the cpt naturally expands and fills itself with particles
without the need for a long theorized period of rapid expansion called inflation while there is
a lot of evidence that an event like inflation happened the theoretical picture of the event is
very vague it's so ambiguous that there's plenty of room to come up with viable alternatives
inflation is now a built-in piece of our standard story of cosmic evolution
but it's still controversial in 2014 researchers claimed to have seen ripples from inflation
imprinted on the cosmic microwave background but this proved mistaken and it's not clear what would
have made the early universe inflate anyway so if for a moment we take inflation out of the
universe evolution equation a cpt-respecting universe would sprinkle itself with neutrinos
there are three no neutrino flavors the electron neutrino muon neutrino and tau neutrino
strangely as we mentioned earlier all three of these neutrino flavors are left-handed
unlike other particles in the universe frankly a cpt-respecting universe ought
to have at least one right-handed neutrino species and that's where dark matter comes in
it's a shame that if a mirrored anti-universe that is equal but opposite to our universe does exist
we will never have the means to go there as our universe and mirrored universe share their origin
point that is the big bang while our universe started moving forward in time from there
the mirrored universe would have moved backward in time
that means unlike star trek where access to the mirror universe and its proliferation of sinister
looking goatees is but a transporter malfunction away we will likely never be able to visit or even
directly measure our anti-universe counterpart as the mirrored universe supposedly is behind our
universe as in before the beginning of the cosmos there would be nothing to visit there however
do not feel disappointed we can still test its existence and maybe prove it for one researchers
predict that the three known left-handed neutrino species would all be major anaparticles
which means that they are their own anti-particles in contrast to normal particles like the electron
which have anti-matter counterparts called the positrons as of now physicists aren't sure if
neutrinos have this property or not additionally they predict that one of the neutrino species
should be massless currently physicists can only place upper limits on the neutrino masses
if physicists can ever conclusively measure the neutrino masses and one of them is indeed massless
that would greatly bolster the idea of a cpt symmetric universe lastly in this model the events
of inflation never occurred instead the universe is filled with particles naturally on its own
physicists believe that inflation shook space-time to such a tremendous degree that it flooded the
cosmos with gravitational waves many experiments are on the hunt for these primordial gravitational
waves but in a CPT symmetric universe no such wave should exist so if those searches for primordial
gravitational waves turn up empty that might be a clue that this CPT mirror universe model is
correct but more importantly if the right-handed neutrinos are what we call the dark matter
we would be able to understand our universe a lot better moreover if the CPT mirror universe model
is correct we might have to redefine our thinking towards multiverse theory as well multiverse
theory has its most prominent example set in the inflation theory suggesting a hypothetical
event that occurred when our universe was very young less than a second old in an incredibly
brief amount of time the universe underwent a period of rapid expansion inflating to become
many orders of magnitude larger than its previous size but if the CPT mirror universe model proves
that inflation never happened we might have to redefine the universe from scratch but then again
these are revolutionary times in astronomy when we are reviewing Einstein's work and questioning
him as well who knows what the universe holds for us next tell us in the comments what this
mirrored universe would look like according to you and as always thanks for watching Factnomenal