so
what if we told you that you exist in another universe that you were not aware of while that may
sound scary it is not impossible to find a copy of you or your loved one living in an entirely
different universe this is because of the theory of multiple or parallel universes however while
some scientists dismiss the theory as fiction more proof is coming in about the existence of these
alternate universes what are parallel universes and how do they affect you all these and much more
as we dive into how scientists have finally found proof for the existence of parallel universes
has it ever crossed your mind if there are other forms of life out there in the universe
humans have been preoccupied with their questions since time immemorial but of course questions like
this are why we are humans meanwhile scientists do much more than asking about other forms of
life though because some of them have theorized that there may be another universe out there right
alongside ours some believe there could be an infinite number of such universes which they call
parallel universes this concept looks straight out of science fiction novels and movies and there
have certainly been enough of those over the years to arouse the curiosity of readers and viewers
everywhere the idea of parallel universes dates back to 1954 when hugh everett iii a princeton
university student developed the radical notion that parallel universes or universes that look
precisely like and related to our universe exist these parallel universes branch off from ours and
our universe branches off from others there are many practical dimensions to this bold theory
because it implies that in parallel universes the world wars might have different outcomes
for example also species such as dinosaurs might have lived in particular parallel universes or are
still living there in fact humans themselves might have become extinct in certain parallel universes
many people doubted this budding scientist and his radical idea however everett's many world's
theory as it came to be known was his attempt to answer some unanswered questions raised
by the results of experiments performed in the growing field of quantum physics
quantum physics studies stuff at the quantum level the smallest level scientists have detected so far
quantum matter which exists on the subatomic level appears to behave erratically at times
as opposed to the orderliness observed in many other spheres this led scientists to believe
there are other scientific laws at work even though we don't know about them yet for example
scientists studying quantum meta soon realize that quantum particles such as photons seem to
take different forms arbitrarily scientists who observe photons noticed that sometimes they acted
like particles and they behaved like waves at other times that's like you being a solid human
being one minute and gas the next this phenomenon is called the heisenberg uncertainty principle
physicist werner heisenberg proposed that we affect the behavior of quantum matter simply
by observing it weird right another physicist niels bohr agreed and took it to another level
by theorizing that quantum particles exist in all possible states at once and when we observe them
our observation affects their behavior forcing them to choose one state at that moment in time
well you can view everett's many worlds theory as an alternative to boar's view of quantum matter
everett posited that observing quantum matter causes an actual split in the universe rather
than a switching between states so the universe literally duplicates and splits into multiple
parallel universes for each possible state of quantum matter meanwhile the many worlds theory
has some implications that make some scientists uncomfortable for example suppose you've ever
encountered a situation which one possible outcome was death then by everett's theory there must be
a parallel universe out there in which you died everett's approach was also controversial because
it conflicts with our fundamental understanding of the concept of time due to these everett's theory
was considered far-fetched for many years still recently scientists have become interested in it
again after some scientists conducted thought experiments that seem to prove the everett's
theory is theoretically possible interestingly everest theory is not the only alternative theory
that attempts to explain quantum mechanics another theory known as string theory claims that there
exist particles even smaller than quantum matter string theory also claims the parallel universes
can exist however working our way from the big bang we will pretty much arrive at parallel
universes how well bear in mind that we have a boundary to the part of the universe that we can
access a boundary in time the universe as we see it began some 13.8 billion years ago in the big
bang where the universe was hot dense filled with matter and radiation and was expanding cooling and
gravitating from that initial state the farther we look back in space the farther we wind up
looking back in time all the way to the boundary of the hot big bang however you can't go back to
arbitrarily early times because if the universe had exceeded a certain temperature and density
it would have properties we specifically observe it not to have instead observations are far more
consistent with the notion that the hot big bang was preceded and set up by a period of
cosmic inflation which stretched the universe's curvature so that it would be indistinguishable
from flat it then inflated away any problematic unobserved high-energy relics predicted to form
at high temperatures this gave the universe the same energy density everywhere with
quantum fluctuations which occur during inflation superimposed atop the uniform energy background
as inflation goes on there's a certain probability that the field will roll into the valley where
inflation ends a certain probability that it won't and inflation will continue and even a
certain probability that the field will roll in the wrong direction taking us farther away from
inflation's end and because the inflating universe continuously creates new space all of these
possibilities can coincide in different regions of the inflating universe as inflation continues
stretching the universe and creating new space in some places the field rolls into the valley
bringing inflation to an end this results in the creation of hot big bangs in those regions
what we might call the universe in between those universes is more inflating space where inflation
doesn't end but continues so new space gets created as the universe expands in other places
the field rolls into the valley bringing inflation to an end with more hot big bangs and even more
universes meanwhile inflation continues in the regions where it didn't end creating more space
now we have a scenario where we get enough inflation to set up the hot big bang with the
properties we observe and always get a multiverse one where independent separate universes
are constantly being born forever separated from one another by space that continues to
inflate eternally while new universes and new hot big bangs continue to spawn
you cannot transfer anything between these universes even though every universe emerged
from the same small region of space no information can be transferred between them they are not
causally connected there are many skeptics of the theory of parallel universes including scientists
one of their biggest criticism is that you can't really test it however an experiment seems to
have changed all of that the experiment was a cosmic ray detection test that found particles
that just could be from outside our universe talk about august visitors nasa's antarctic impulsive
transient antenna anita uses a giant balloon to hold delicate electronic antennas high into
the cold dry air above antarctica where there is little or no radio noise to distort its findings
there is a constant wind of high energy particles coming from outer space some of which are a
million times more powerful than anything we can generate ourselves low energy particles known as
neutrinos can pass completely through the earth barely interacting with the substance of our
planet at all but higher energy objects come to a halt thanks to the solid matter of the earth
this means that high energy particles can only be detected coming down from outer space but to
detect a heavier particle known as a tau neutrino coming up out of the earth would imply that these
particles are actually traveling backward in time this suggests the evidence of a parallel
universe however many scientists have explained away the phenomenon observed by anita claiming
that while the finding is interesting it was due to some other things apart from parallel universes
however that is not surprising past astronomers believed our planet to be alone then our solar
system to be alone so the existence of multiple universes isn't a theory to dump but then how can
we test the existence of parallel universes well if our universe collided with another it would
offer some evidence some theorists have suggested that colliding universes could leave cold spots or
hot spots on the cosmic microwave background cmb the afterglow of the big bang if so we should be
able to detect those spots with advanced sky surveys gravitational waves which are 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 it back in 2014 it could ultimately boost support the
idea that there's another you out there going about their daily life in an alternate universe
proving sci-fi writers correct once again however before that happens there is a connection between
parallel universes and two other mysterious and scary space phenomena black holes and white holes
black holes are those terrifying objects in deep space that swallow everything that comes near
them they are formed when giant stars collapse on themselves creating very dense masses that have
gravitational forces so strong that nothing can escape from their attraction not even light white
holes are the opposite of black holes because they push out everything inside them and nothing
can go inside there are various theories about the formation of white holes which we won't go
into in this video but how are the three connected in essence every white hole could generate other
big bangs generating multiple universes inside our own or outside its radius or boundaries
hence the laws of physics there would be different reality could be made from antimatter or possibly
time wouldn't be positive and unidirectional probably these universes would be mirrors to
our universe with divergent timelines based on different quantum states coming to life confirming
quantum superposition let's hear what you think of parallel universes in the comments section below