10 Things About the Universe That we may Never Understand


The universe is a very strange place full
of mysteries and odd possibilities that, while scientists ceaselessly try to figure them
out, may remain complete unknowns forever no matter how advanced our civilization and
our science becomes. So here are ten bizarre possibilities regarding
the universe that we may never understand. 10. We May Never Know What Gravity Is One of the biggest mysteries in science is
the nature of gravity. For something that we interact with constantly,
we really don’t know that much about it. Newton tried to tackle the issue, but only
came up with a general way of expressing how it behaves, but not what it is. And even then, Newton was very slightly off. Einstein took that further, but he himself
spent his last decades trying to figure out just what gravity is, but again to no avail. Today, scientists know how gravity behaves
in the framework of space and time, and can predict it very accurately, but what the force
itself actually is remains an unknown. Ideas on this range from the existence of
an elementary particle, known as the graviton, that mediates the force of gravity. Trouble is, gravitons have never been found,
and there is doubt that they even exist. Another take on it is how Einstein described
gravity, as a warp in space-time, or an inherent acceleration towards massive objects. Trouble is this is an incomplete view, and
again simply describes how it behaves. Not what it is. Perhaps the most strange aspect of gravity
is that as far as a force of nature goes, it’s incredibly, incredibly weak. Look around you. Just to hold you to the ground, you need the
entire mass of planet earth to generate enough gravity to do it. Yet, we routinely defeat the force of gravity
when we launch space probes. Why it’s so weak adds to the mystery, and
recent work to determine if gravity is weak because it’s mostly leaking into other dimensions
came up negative. So gravity remains a great mystery, and while
we may someday understand it’s nature completely, there’s also a chance that we never will. 9. Is the Universe Infinite? We live in a sort bubble within the universe. We call it the observable universe, and beyond
it lies more of the universe that we can’t observe. This is a matter of the speed of light, objects
beyond a certain point cannot be seen because the universe hasn’t existed long enough
for the light from them to reach us. One open question within cosmology is how
much more universe there is beyond what we can see. Some think it’s not that much, yet others
think it could be substantial. But there is another idea, that it is infinite
and if that’s the case it introduces some very strange possibilities. In an infinite universe, it becomes plausible
that if you travel far enough you will run into another earth, slightly different, with
another you living on it. Still further and you may find another, again
slightly different, and so on leading to a kind of physical, real alternate reality all
existing within the same universe. Given that we will never be able to observe
the entire universe due to the expansion of the universe, this question may remain forever
open. 8. The Double Slit Experiment This strange aspect of our universe is one
of those kinds of things that make sense when expressed in the mathematical terms of physics,
but appears counterintuitive to a human. But the double slit experiment always yields
the same result, having been performed thousands of times. It has to do with the dual nature of particles
as both waves and particles. The idea is that you fire particles, say electrons,
at a baffle with two slits cut into it. Behind the baffle is a wall. You will see on the wall as the electrons
pass through the slits an interference pattern, indicating that the particle is behaving as
a wave, much like an ocean wave passing under a pier. However, when you put detectors on the other
side of the baffle and observe the particles the interference pattern on the wall disappears
and becomes two slits indicating that the particle is acting as particle, not a wave. In short, for all intents and purposes, the
act of merely observing it changes the outcome of the experiment. 7. Will the universe someday cease to exist? A great unknown within cosmology is what’s
eventually going to happen to the universe. In one view, it will simply go on forever
until literally all stars burn out, black holes evaporate, iron stars form and all goes
dark at some point but continue on infinitely. This in itself opens up very bizarre possibilities
of chance and infinite time, such as the formation of a boltzmann brain, where random fluctuations,
if given enough time will cause some kind of a consciousness to randomly appear in the
dead universe out of nowhere. But it could alternatively be that the universe
will someday meet an end. This debate is not settled within cosmology,
and there have been many potential ends of the universe advanced, but two possibilities
stand out. The first is if the proton is capable of decaying. This is an unknown, but if they indeed do
decay the universe will effectively end when they do, given that all matter in the universe
will simply dissolve. Another possibility is that the universe itself
is somewhat unstable in that it doesn’t exist at its true vacuum state. If something were to happen within the universe
that pushed some part of it to the true vacuum, the results would be disastrous. Expanding at the speed of light, the entire
universe would be ripped apart as it moved to the true vacuum. This could dramatically alter how the universe
works, such as how gravity functions, or how matter is structured. The universe as we knew it at least, would
no longer exist and we very likely wouldn’t survive it. Thankfully, the timeframes for this to happen
are very likely far longer than our species can exist within the universe. 6. What set off the big bang? Regarding the big bang, generally, the earlier
you go in that process, the less it is understood by current science. Known as the Planck Epoch, when applied to
the first moments of the big bang, the theories that physicists rely on to describe the universe,
particularly Einstein’s General Relativity, no longer predict what exactly happened. What can be done is somewhat informed speculation
based on evidence of the Big Bang, such as the cosmic microwave background radiation,
and there exists several scenarios that might someday prove to explain what exactly happened. One possibility comes from string theory and
its variants, where the universe is suspended on a kind of membrane. When this membrane collided with another membrane,
that impact set off the big bang. Others include that the whole thing was set
off as a result of quantum fluctuations, or that the universe is one of many in a kind
of multiverse where universes bud like flowers on a tree off of other universes. Also suggestions have been made that the universe
is the other side of a black hole, known as a white hole where matter leaves the black
hole. Whatever the case may be, because we have
no way of seeing what happened during the Planck Epoch, it’s entirely possible we
may never fully understand what exactly happened. 5. Spooky Action at a Distance We often view the universe as a place of immense
distance. Any two objects can be separated by almost
unfathomable distances,so distant that they can’t ever even observe each other. But that absolute concept of separation is
not necessarily set in stone in the quantum mechanical world. In fact, separated particles can be connected
to each other through a phenomenon of quantum mechanics over vast distances and influence
each other instantaneously, so long as they had some physical interaction in the past
that entangled them. Einstein called it spooky action at a distance
and absolutely hated the idea, but the phenomenon of quantum entanglement is real and has been
experimentally proven. Put simply, if one particle changes behaviour
such as its spin, the other reacts instantaneously, no matter how far away it is. Unfortunately, this behavior cannot be predicted,
meaning that it can’t be used to convey information, the universe does not allow information
to propagate faster than light. Exactly how this occurs depends on what interpretation
one holds of quantum mechanics, though ultimately we may never know exactly how particles do
this. Just simply that they do. 4. 11 Dimensions of Space and Time Regarding our last entry, one of the ways
quantum entanglement might work is that particles might not be connected spatially in the dimensions
we perceive, but might be closely connected in another dimension that we can’t perceive. While it’s still very much up in the air
whether other dimensions exist, or how many there could be, there are hypothetical possibilities,
particularly within the realm of string theory. One interpretation involves 11 dimensions,
ten of space and one of time. The reason we do not see these other dimensions
of space is because they are curled up, and thus imperceptible to us. But at the very first moments of the big bang,
they may not have been, and may have played a role. Whether this is the case or not, or whether
other dimensions even exist at all, could remain open forever. 3. Time Travel Is Possible — At Least in one
Direction Is time travel possible? The arguments against traveling to the past
are numerous, especially because it would violate causality. It’s the old what happens if you go back
in time and kill your own grandfather scenario. Would you cease to exist? But that’s only part of the story of time
travel, and it may not be as set in stone as you might think. Now travel to the future is easy, it’s literally
built into the universe and you’re doing it right now as the clock ticks. Because of relativity however, very high accelerations
can affect time in a process called time dilation, that allows you, in your frame of reference,
to travel into the future simply by accelerating. This is exemplified by the twin paradox, where
one twin stays on earth, and another twin travels through space at relativistic speeds
and when he gets back, he’s no longer the same age as his twin. Even on smaller scales, satellites in orbit
have to be corrected for minute amounts of time dilation. So, in short, if you go extremely fast in
space, you will travel forward in time at a different rate than someone sitting here
on earth. Trouble is, if you go 500 years into the future,
you have no way of ever getting back to your own time. Or do you? The answer is maybe, but it wouldn’t be
easy, and in all practicality is likely impossible. But this may not mean that backwards time
travel is strictly impossible in the universe. Hypotheses exist that under very special conditions,
such as if you had a rotating cylinder of infinite length, or under certain conditions
involving traversing a black hole or wormhole not through space, but time, might allow you
to at least in principle travel backwards. But, that we do not appear to see time travelers
from the future visiting suggests we will never figure out backwards time travel, or
it’s illegal, or we simply go extinct before we figure it out. 2. The Universe Will Someday Be Mostly Invisible In this option, we actually do understand
what’s happening, or least parts of it. But in the very far future, anyone that might
exist very well may not understand the vast majority of the universe in the way we do. This is because as the universe ages, and
continues its expansion, everything but your local group of galaxies will be so distant
that light cannot travel fast enough to make up for the expansion of the universe in between. Essentially a civilization existing in the
old age of the universe will have no idea that countless other galaxies exist in the
universe because they will be invisible. They may not even be able to determine that
a big bang ever happened, or know anything about the universe as it is today. They may be able to study their local group
of galaxies and glean some clues about the nature of the universe, but even worse an
isolated rogue star system in the intergalactic medium might not even have that option available
to them. They would essentially be marooned on their
world until the effective end of the universe itself, never knowing very much about it at
all. One. The Many Worlds Interpretation It’s possible to take a completely different
approach to the concept of parallel universes; different from the concept of a multiverse. In the 1950’s Hugh Everett hypothesized
that other universes could exist hovering, for lack of a better term, alongside our own,
constantly splitting off from each other and that events in those universes may all have
different outcomes. This leads to some strange ideas, such as
that in a parallel universe the dinosaurs did not undergo a mass extinction event, and
humans never evolved as a result leading to a modern earth still dominated by dinosaurs,
perhaps even intelligent ones. Other possibilities are well explored in science
fiction, from everything from what might have happend if the allies had been defeated in
world war II to evil alternate universe Spock with a beard. This may seem far fetched, and it is, but
not the underlying reasons why Everett hypothesized the possibility. Within Quantum mechanics is a question, one
related to the double slit experiment. Why does quantum matter behave so strangely? Why do particles take different forms? Niels Bohr hypothesized that these particles
don’t actually exist in any one state at all, but all possible states and that observing
the particle forces it to pick a state. But that’s only one take on it. In Everett’s interpretation, when a particle
chooses a state it actually causes a split in the universe itself, creating an entirely
new universe branching off from another, explaining why particles can be measured in different
states because they exist in all possible states spread across parallel universes. In the world of the big above the quantum
level, this means that there could be universes in which you are dead, or a very different
person. Whether these parallel universes exist or
not is an open question, and probably will never be answered as it doesn’t seem possible
we could ever detect or measure these other timelines. But this concept of collapsing wave functions
can be taken to an even more profound level. Some have asked the question does the entire
universe have a wave function? Would it even exist if it weren’t being
observed? It’s hard to believe that would be the case,
but it is a question, by its nature, we probably cannot ever answer for sure. Thanks for listening! I am futurist and science fiction author John
Michael Godier currently musing about alternative universe JMG again, the one without the goatee
that streams on twitch instead of making youtube videos and drives a malibu instead of a lebaron. I don’t think I like that guy at all and
be sure to check out his books at your favorite alternate universe online book retailer and
subscribe to my channels for regular, in-depth explorations into the interesting, weird and
unknown aspects of this amazing universe in which we live.

Author Since: Mar 11, 2019

  1. And without the physical What R we . How much more do Rr can we become with the trials and tribulations of the Flesh…

  2. We have no influence directly.
    If I describe a star cluster to someone knowledgeable,
    they will also be able to find the same grouping.
    In detail. Color and size identical description.
    It is there in that state, regardless of which observer.
    Perhaps our influence, needs direct proximity?
    But that would entail changing everyone's perception.
    Matrix stuff.

  3. Gravity is just the code of the hollow deck we are on trying to keep things where they generally belong. Self correcting codes are the laws of physics.

  4. Shoudnt we study the core of our planet since we as creatures get pulled to the ground due to gravity. So it has to be a planetary force. No?

  5. How do you not know that you are not dead now? Therefore death will only bring a new life. Where does the mind go when we are asleep? Maybe the mind goes into death mode. This is all bliss. You must first live to die. Then you will only live when you die.

  6. the fact that nobody has come from the future to our present is simple really when you understand that there are millions of past years to explore they may never get around to us or if they did it would be covert and probably one time.if i had the choice to pop into the 70s for a few hours or a few hours spent in dino times i know where my craft energy would be best spent

  7. There's trillions of things on this planet that we don't understand, ourselves being approx 7 billion of them ;+}

  8. Bleh. People always try to make science sound like we havent got a fucking clue about anything. Try telling people what we DO know instead.

  9. 3 the earth the stars. The Phiysical universe. Time universe angles life in space u f o s. Demons spaxe alien. Be as a child for such is the kingdom of heaven then the Houdini we are on a need to know basis and we don't need to know

  10. The Universe has always been and it will always be. It had no beginning and will have no ending.The light has been forever and it will be forevermore. This is called eternal. When one looks out into the night sky those stars go forever and ever and ever with no end.This is called infinite.The Universe in itself is the Always, the Forever, the Never-ending, the Eternity and the Infinite. The Universe needs no creator or creation to exist. It is complete it is everything, it is all. In the Swedish language it is Hel.

  11. Its so crazy to me
    We really know very little
    There is so much that we can't see or measure so we don't even kno its there
    So crazy to me! Mind blowing for real

  12. wouldnt every partical in the universe be intangibled with ever other partical. Given at the big bang they would have all been infinitely close as to enable exchange of the required information needed for entanglement to occure?

  13. If we lived in a infinite universe. And we exist in a bubble of what we consider to be the observable universe. Wouldn't we appear to exist at the center of said observable universe? Rather than on what is apparently an outskirt area of the universe?

  14. Yeah, but it appears accordingly to you that tho our gravity is weak, its strong enough to hold the moon in place which is 240,000 mls away and that produces enough gravity to move the mass of oceans which have a general weight of 2000 lbs per cubic meter, so gravity which you say we know very little about appears to be manipulated not only mass but actual chem make up, I would suggest that due to different compounds and their associate electrical charges x density is gravity, iron different electrical charge of a static environ. As compared to ion exchanging living environ. This is based on a strata theory, example,ocean is dense but turns into gas, with that effect changes electrical field density, or attraction…just a thought,

  15. I was always wondering what happened before big bang, was there anything? It has to be, as so everything has it's beginning and it's end. So what created the energy that causes the big bang? Was it god? People will say so

  16. To believe in time travel is harbouring of aloof mentality thinking space is open wide to travel from here to the end of the universe, but not so, there's space boundaries out there, it's the circumference line of a Star ENERGY FLOW, which makes all motion thierin possible, where nothing ever enters or leaves , including Voyager 1and 2.

  17. "Space – The Final Frontier". If I went back in time and killed my grandfather, I could still exist. If grandpa had already knocked up grandma with my pa or ma (you didn't specify paternal or maternal grandpa) I could still exist. You could go back to as many antecedent grandpas as you want and this could still be true. Am I wrong?

  18. Gravity is created by collisions of electons that create positrons, protons & nutrons that bind with gluons and attract negative electron force to orbit around the positive neuclious force within the vorticular, centripital force of gravity. Gravity is a resistive force to a natural flow of non interactive dark energy.

  19. The universe is a non interactive field of electrons known as dark energy. It is a field of infinite velocities that make up 70% of the universe, 26% dark matter and only 4% light and sublight speed bayronic energy/matter.

  20. 8. Neil deGrasse Tyson actually explained on a podcast with Joe Rogan that the double slit experiment isn't as mysterious as we make it out to be. Basically what's happening the only available tool we have to measure the particle is with protons(light),and basically what's happening is that the proton that we use to measure the particle actually hits the particle and it "knocks" it out of place like two billiards balls hitting each other and knocking the particle out of place.

    No-one will probably ever read this but I thought it was interesting and worth a share ๐Ÿ™‚

  21. If a partical is moving through matter would it not create a wave through said matter giving the illusion that it's acting as a wave it's self and creating the constructive interference? Just asking

  22. What if each particle that ever was has a mathematical or dna type code that ultimately determines what form they ultimately will take?

  23. Well,existing on the exit side of a โ€œwhite holeโ€ would explain a lot of the โ€œBig Bangโ€ theory. To my mind,at the least.

  24. When gravity has the strength to alter the laws of physics, how can it be considered the "weak" force? Using the gravitational force felt on the surface of a planet as an assessment of its actual strength would be like using a firecracker to measure the force of a nuke

  25. Hi guys.
    I once saw a random documentary regarding space,time,the cosmos etc and it was kinda mind boggling until….the near end…when the narrator said…
    "With our biggest,most powerful telescope we can see about 1% of what we THINK is the size of the universe,THE OBSERVABLE UNIVERSE"…
    Ok,I got that….

    "In comparison,an ANT would have to walk from planet earth to the …sun,to achieve how far our most powerful telescopes can see. That should give u a rough idea of the great distances of the cosmos"!
    I turned off the program and I have been depressed ever since!
    Peace

  26. I have a really big problem when anyone says we can't see some stars yet because the light hasn't reached us yet. What are you talking about dude? The only light source that hasn't reached us yet has a few factors in place. One, your right, millions of light years to get to us. TWO, If the light hasn't reached us yet, along with the expansion of the Universe, these so called stars must have formed sooner than you think. If not, the light was there when Earth formed. Thus, I have a big problem with saying the light hasn't reached us yet. Those stars we can not see (a guess), are not from the beginning of the Universe.

  27. Who wants to be freaked out? Stop the video at 5:19 and look at the left corner area above the time. What do you see? ๐Ÿ˜€

  28. 0:03 i love seeing the pics with the galaxies as countless as they are. crazy that all those countless stars in our night sky [like 0:14, and maybe 1:30] are only a tiny small bubble within our area of the galaxy, with thousands and thousands x more in the galaxy with even more than that x1000 of galaxies in the universe with hundreds of billions of stars within them as well. trillions and trillions of stars in the visible universe bc there are many many many more galaxies in universe than there are stars in our own galaxy.

  29. 5:55 so in the early years with the first stars formed, there were no planets yielded yet bc the matter wasnt created from within the stars yet as "stardust" exploded to the create new stars and planets with the debris getting entangled with the gases.

  30. 11:45 will there ever possibly a huge void in the very center of the universe where the Big Bang originated as it travels outward?

  31. what if we finally pin pointed and created the ability to reach the farthest end of the universe and all thats there is a table and a chair. Not even 2 chairs. Just one.

  32. 3:25 why do i see you show this shape about supposedly the universe , no itโ€™s not , those are stars (his boys) , and theyโ€™re round , the universe is that dark behind their asses , now let me tell you what a black hole is , a star that thinks itโ€™s greater than the universe (its father) , so self-centered that it collapses within its asshole (dodo) , thatโ€™s what up

  33. With regard to quantum entanglement; our dimension excludes the possibility of objects/information travelling faster than the cosmic speed limit, light. Therefore I theorise there must exist at least another dimension where distance is obsolete. This would explain a lot of the behaviour observed in quantum mechanics.

  34. 8:04 Since you brought Einstein into this and he was a great fan of 'thought' experiments, lets do a little one of our own. Imagine two Astronauts on independent stations at a fixed distance from each other, say 186,282 miles apart. They each have in their hand one end of an incredibly rigid and light nanotube bundle stretched out across the one light second expanse between them. When one Astronaut pulls or pushes on the rigid nanotube bundle the other Astronaut INSTANTLY feels the movement, jack the distance to 1,862,820 miles or 18,628,200 or infinity and the movement is still felt INSTANTLY.

  35. I rather like the presentation of this video, I usually watch educational and documentary videos, I don't seek out relaxing background videos specifically but this one is both informative and chilled out and very welcome in my present mood

  36. Go to a black hole and call gravity "weak"… Strange how the weakest force in the universe is also the most powerful, isn't it….

  37. Re: Point 2 — future civilizations may never know as much as we do about the nature of the universe.

    It COULD be that some long past civilization, say near the big bang, or possibly BEFORE the big bang deduced the nature of the universe better than we ever could. And knew that a big bang would some day happen erasing any possibility of seeing or understanding the past before that. And that future civilizations would never be able to fully understand the true nature of the universe because of it.

    What we say about future civilizations not understanding the true nature of the universe may well apply to us. And ironically may also apply to those who maybe lived before what we call the big bang (perhaps in the universe that contained the black hole that spawned ours). Maybe none of us will ever know the true nature of the universe, past, present, and future.

  38. And re: Point 1 — it's essentially a "universalized" form of the "if a tree falls" question. It makes me wonder now if that question was not philosophical but more a quantum riddle handed down over a few generations with its universal mystery lost to the minds of children.

  39. Spooky Action at a distance sounds like subspace to me. A means to communicate quickly over vast distances. We just do not know how to use this law or field properly.

  40. I am surprised you didn't mention the sun. We don't even know what powers the sun. It is not a thermonuclear furnace.

  41. gravity definitely not a force, once you claim it as curvature on space. earth not pulling things down, it's only made a curve. the more deep the curve is more your drawn towards it.

  42. regarding the big bang, i was coming to understand from various sources that the big bang is mostly understood as to have nevr occurred at all but rather than the universe just is? is this not the case?

    regarding time i was under the impression that there are 3 main forms of thought in regards to time. 1- time is headed forward, 2- time could be going backwards, 3- time could be going sideways or be more or less sporadic in its flow and/or perhaps not advancing at all albeit very slower than we can interpret. what is the only answer we have is that we can only interpret it as going for what we call forward

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