What is Space-Time And How It Works? - Documentary HD
What. Is our universe, made, of. It's, the biggest unanswered, question. In science, despite. The name space, is not an empty space at all space, itself. Is something. There's, a hidden structure, and a force that, exists, within space, itself. Space. Is very much a dynamic. Incredibly. Active medium. A force. That connects, everything. In our universe it's. An active, player. And the game of life. It, underpins, our reality, tying, together all, of space and time since. The very beginning. We. Call it, space-time. It's. Everything, space-time. Is what the universe really, is. Space-time. Is, how our universe works, but. What exactly is, it and how. Does it control, our past, present. And future. We. Can't see it. We. Can't touch, it. But. Without space-time. We. Wouldn't be here. Space-time. Is a fabric, of our reality it, shapes, and governs our lives if. We want to understand the story of the universe that's absolutely, crucial we, understand, how space-time, behaves. Space-time. Has been active, since the beginning of everything, and is the key to the evolution of everything. We. Have to understand, space-time in order to understand, the history of the universe to, understand, how the universe began, how, it evolved, and what's gonna happen in the future the. Story of space-time, is the story of our universe. To. Know how the story plays out how. It will end we need to go back to, the very beginning. To. A time when. There was nothing, no. Stars. No. Space a time, before. There was time. Then. All, of a sudden. Our. Entire universe, was born in. The Big Bang it, started. In a instantaneous. Moment where from, nothing our universe was created, the. Very definition of, the moment of the Big Bang is that, space and time were, created, at that instant. It. Is as far as we currently know that, coming into existence of, space and time itself. The. Infant universe a, tiny. Speck, of energy, and space-time. Materializes. From nowhere. Then. The. Universe, suddenly. Expands. The. Idea of inflation is that a very tiny region, in an incredibly, short amount of time far shorter than a second grew, by. Many, many many, orders of magnitude so. Imagine, myself suddenly. Becoming the size of a galaxy. In. A fraction, of a second, the universe grew, from, smaller than the size of an atom to, the size of a baseball. In, cosmic, terms that's, like a grain of sand growing. Almost to the size of the, observable, universe. The, universe at the instant of inflation, actually expanded, faster than the speed of light it seems to be a violation of everything you've heard in physics you may be thinking hey hey hey mister astronomy guy nothing, can move faster than the speed of light it turns out that's, kind. Of true but, the rule is nothing. Can move through, the universe faster, than the speed of light in inflation, its space itself, that is expanding, so there is no violation there is no paradox. Inflating. Fast the, universe went, through a phenomenal. Growth spurt at. The moment of the Big Bang space-time. Was, this entity that was flying out in all directions it, was space itself, that was expanding, but. The, universe didn't. Expand evenly. One. Spot in the universe was ever so slightly more dense than, a spot right next to it and we're talking about a tiny tiny fraction of a percent one, part in a hundred thousand. But, that was enough. Fluctuations. In expanding, space-time, created, areas, with higher density. Inflation, made, these high-density. Regions larger. And. This. Allowed our universe, to, take shape. When. Parts of the universe didn't inflate quite the same way as others, all, of a sudden things could start to come together. As. The, universe, cooled, energy. Turned, into matter. And. In the denser regions that. Matter started. To clump together. Crucially. These. Regions, had more mass than others. Mass. Bends. Space-time, so, anything. That is made of matter bends, space-time, and the more matter you have in one place the more you bend it in fact I've been in space-time right now when, I flex, I've been at even more because of my incredibly, high bustle, density I don't, bend at the maximum, I don't want to destroy the earth in the solar system but, you know it's an effect it's a real thing if I had imaginary glasses allowed me to perceive, directly to space-time, suddenly.
Those. Hidden. Aspects. Of a. Curved universe are as visible as the hand in front of my face. We'd, see a curving, grid of space-time, moving, and reacting, to objects, within it and. We'd. Feel the, curving, of space-time, as the. Force we call gravity. Gravity. Is different from all the other forces it is intimately, connected, with the curvature of space-time something. That can bend space and time has. Gravity, that's. What gravity is the bending of space and time itself. It's. Hard to visualize this. But. A good analogy is a trapeze, artist and, their safety net. You. Can imagine a trapeze, artist falling. Into a net on purpose, that net is flat and looks like a nice orderly. Evenly, spaced grid but, when they fall into it they distort, that grid well that's a lot like space if you have matter in space it warps, the framework, when. The trapeze artist is resting, in the net they're, bending, that space-time grid. A little bit if you had two trapeze, artists in there double the mass in roughly, the same volume you, would get a bigger dip you have a bigger distortion and that's, how space-time, works. More. Mass equals. A bigger curve, in space-time. Equals. More, gravity, but. Understanding, the nature of gravity and, space-time, there's. No easy thing. It's. An idea developed, by, one of the greatest minds ever. Einstein. Had the idea that space itself, is. Something. Something that can be bent so I mean it can be stretched, that. We are all bound together by, space-time. Einstein. Says, that space and time have. A geometry they, have a life of their own they have dynamics. Those, dynamics, are what, we call gravity. The. More dense the region of matter the, greater the gravity, the, deeper the curve. This. Connection, is the foundation, of our physical reality. It's. The interaction, between matter, and energy and space-time that, created the universe that we see around us today, but. That doesn't mean we fully understand. It there's. Much more that we don't know and that's frustrating with, the laws of physics I can talk about how space-time, behaves, but, it does appear to be something that stretches that contracts, and that gravity. Is the embodiment of space-time. Born. In the Big Bang space-time. And. Energy, combined, to, create our infant, universe. These. Basic, materials, were. The foundations. But. How did we get to the incredible. Complex. Structures, we see today. How, did. Space-time, build, our, majestic, cosmos. Our. Entire universe was, created in the Big Bang. 13.8. Billion, years ago everything. Came, from, nothing. But. Our modern universe, is, a complex, mosaic of, matter, I. Mean. Marvel through our telescopes, at the fantastic structure. Of our universe and, it's galaxies, if. You want to ask where, did that come from matter. In the universe arranges. Itself on a vast cosmic web galaxies. And galaxies clusters, are strung out on sheets and filaments.
It. Seems this intricate, web is, organized, by a cosmic, architect. Space-time. It. Shaped everything, from. Planets, to, galaxies, atoms. To. Cities, the. Universe is made of space-time, whatever, the substance is time and space bound, together that's, expanding. And creating the universe we see around us it's. Everything space-time. Is what the universe really, is. It's. A hard concept to, grasp and. Even harder to visualize. Scientists. Observe the universe in different wavelengths, of light, this. Is the Sun in. Visible, light. X-ray. And, ultraviolet. Now. Imagine, if we could see it in the space-time, spectrum, we. Would see space-time. Distorting. As objects. Move through it. Spacetime. Can warp and push things around it can expand, and pull things apart. But. It's the shape of space-time, that, dictates, how we experience, it, imagine. You're in your car you go up hills and you go down hills so the shape of Earth's, surface, determines. How you travel, across Earth's surface in the, same way the, geometry, of space-time, determines. How light and matter move, through space-time. The. Rules are simple matter. In fact, any object. Tells, space-time, how to, curve the. Curvature, of space-time, tells. Matter how to, move. Because. The, shape of space-time, tells. Matter how to move what, we call gravity, this, means that, gravity and, the shape of space-time tells. Matter how to clump together and form larger and larger structures. But. At the beginning the, space-time, landscape. Was, very different, from today's. And the very first matter, started. To change the shape of space-time. So. This space, right, here has a tiny, bit more matter in it than this over here wherever. There was a little bit of extra mass that. Would Bend space, a little bit more well, if you're bending space a little bit more then more mass would collect there in the, early universe the. Denser, regions of, matter. Created. Deeper, curves in space-time and. As. The mass gets bigger as stuff falls into that well it gets deeper, and deeper and deeper and attracts more stuff it's just a runaway process.
Gravity. Increased. Pulling. In more, and more matter. More. Dams got more dad's got more downs and then before you know it you've got a star and you've got a bunch of stars and you start to make a galaxy and the, Stars, evolved, and began forming, large structures, they sort of burn through all their nuclear fuel and exploded, and they made all the heavier elements, and with. Time we, got down to having things like, planets. Atmospheres, people. All. The things that we care about today. All. Of this started, out as energy. Fluctuations. In expanding. Space-time. These. At first very tiny fluctuations became. These gigantic, structures that we actually, see today and over billions of years that material, began to coalesce into individual, galaxies, stars. Planets and, you. Fluctuations. In the expansion. Of space-time laid, out the pattern, of the universe. The. Curvature of space-time, controlled. The evolution. Of everything. We see today. If. Space-time, didn't have that property, and bringing mass together then. All we would be is a thin haze of hydrogen gas not, a very interesting Universal. If. Space-time, didn't curve because, of matter inside, of it the, universe would be a really weird, place I mean there'd, be no gravity, there'd be nothing. To make things stick together, no. Force of gravity, means no, stars no. Planets and, no, people. We. Owe our, existence to, space-time. But. Even scientists, struggle to understand, it I, wish. I knew what space-time. Is, we, know things about space-time, but. At the same time we feel like we know almost nothing about space-time. Then. In 2015. We, caught a break, and. For. The first time we, heard, ripples. In space-time. Generated. By one of the most violent events, in the history of the universe. The, universe, is filled with space-time. We, think it's been around from the beginning of everything, quietly. Pulling. The strings of the cosmos. And sometimes. We get a glimpse of this elusive. Puppet master in action. 2016. Astronomers. Witness a strange, optical. Phenomenon a weird. Circle, of light like, a cosmic, halo. This. Is actually, what you would see in the sky if your eyes were as sensitive as a telescope. They're real this is not some artifact. Of how we adjust the images something. Is actually bending. Space, and time itself into, a lens. That. Something, is a red galaxy, which, is over seven billion light, years away from Earth. It's. Bending the light from a blue galaxy. Which. Should, be hidden, behind it it's. Called gravitational. Lensing. Gravitational. Lensing is an amazing, phenomenon because it demonstrates, explicitly. What. Einstein told us that space is curved and space. Acts like a lens just, like the lens in my glasses act and when. You look out at the universe we see all of that it's. Remarkable. Mass. From the foreground galaxy, creates. Curves, in space-time which. We know is gravity. Light, follows. Those curves and is, warped, so, it bends around the galaxy. Massive. Objects. Like, clusters, of galaxies, can, bend the, path of light through, space-time a lot, like a piece, of glass can bend the path of light so. When we look at a distant, galaxy as, the light passes through a galaxy, cluster we, see multiple. Images of the, same galaxy we, see arcs. In circles, as if, that galaxy, cluster were made of glass we. Are seeing, the warping, of space-time. Literally. Played out in front of our very eyes. Gravitational. Lensing gives us a way of seeing the, effects of space-time. On light. But, it's, only an indirect. Observation, of space-time. Could. There be another, way, of, experiencing. Space-time, right. Here on earth not, everything, that happens in space can be seen sometimes, you have to listen for it as well. Believe. It or not space, is a material. Much like this iron sheet and like, this iron space, can distort if, I put a very heavy weight on this sheet of metal its shape is gonna change and it's gonna distort, amazingly. Space, can carry waves and, so can this iron sheet but to get this sheet wavy you need something really powerful something. Like, me and my hammer. Did. You see those ways to travel to that iron sheet. Well. Waves pass, through space, in, exactly, the same way recall, these gravitational.
Waves. Gravitational. Waves. Are, vibrations. From cosmic, events, transmitted. Through, the material, of space-time. To. Set off waves in space you, need the biggest, baddest. Most powerful, events in the universe something, like the collision, of two black holes, when. Two black holes collide. The, energy, released, sends, shockwaves through, space-time across. The universe. By, the time they reach Earth they're, so small they're, immeasurable. Almost. In. 2015. Scientists. At the LIGO, Observatory. Made a groundbreaking, observation. They. Detected, ripples. In, space-time. Gravitational. Waves. Rumors. Began flying but became clear after a while that this was indeed, the first direct detection of gravitational waves, seen. By man-made. Instruments, on the earth. When. We discovered gravitational, waves it. Had been so long that we've been waiting for signals not. Only did most, of us not believe it I went, so far as to be so skeptical as to look into all kinds of conspiracy theories, for ways it could be faked when. I saw, this data, I still, think back on it now and, the emotional, impact it has on me the, only thing comparable, is when I saw my daughter's, face for the first time after she had been born, it. Was that kind of an emotional impact just, having. All of this, things that we had worked for coming. To fruition in one moment it's. Mind-blowing. We. Can actually hear, these gravitational, waves on, earth. Part. Of what makes us so amazing it's a bit of a coincidence but it's a really cool coincidence, is that the signals, that LIGO, actually, measures are, in, the, same frequency band as the sounds, that the human ear is sensitive, to, we. Can hear the waves change, frequency. As the two black holes get, closer and collide. It's. A swoop up in frequency that sounds like. What. We were hearing in that, were. Two black holes that are orbiting around one another and then coming. Together that. Was it. Listening. To ripples, in space-time has. Given us a powerful, new tool to investigate the universe. We. Are now hearing, things in gravity, for the first time it's a sense that we have never been able to apply to the universe and we're beginning to learn what, is out there the, observation, of gravitational. Waves from black holes is one. Of the most significant, findings, in astronomy, by. Anyone in the, recent hundred years it's. Hard to overstate the importance of gravitational, wave astronomy much. Like when Galileo first, pointed his telescope at, the Stars to see something new we now have an entirely new window into the universe. Gravitational. Lensing and gravitational. Waves offer, us, an insight into the complex relationship. Between gravity. And space. But. What about the other half of the equation, time. But. It turns out you know it's space, time gravity not. Only distorts, space it actually, distorts. Time too, we. Think of time is something that can't be changed it, simply flows ahead at a constant rate but, that's not the universe we find ourselves in, and.
Some, Crazy circumstances. My. Time might, even according to you stop. It, might even be possible to, travel through, time and go. Back to. The future. You. For. Sci-fi fans space. Is the, final frontier. For. Scientists, exploring. Time, is a much bigger challenge. Originally. We thought of time is the, same thing as the Sun rising, and setting but, now we've come to realize the time is a more fundamental concept. Than that time. Isn't, just something that passes, time. Is, an essential part of our universe. It's. Part of the fabric of space-time. The, Big Bang was, the beginning of space and time. Since. Then space, has been expanding and, time, has, been ticking forward. It's. Been doing this for, 13.8. Billion, years, creating. The universe we. See today. Space. And time are tied together they're, that they're the same thing. So, when. Matter, influences. Space time it's not just creating. Deformations. In space it's, also affecting, the flow of time this. Is where space-time, becomes really cool. Just. As gravity, bends space, it, also distorts, the, flow of time. This. Isn't how we perceive, time this is actually the, rate at which time, flows, very. Massive objects, can warp and twist space-time. Itself so. Not only is space distorted, but, time itself can slow down or, even stop. The. Stronger, the gravity, the greater the distortion. What. Has the most gravity, a black. Hole. Doubt in space near a strong gravitational tug, from a black hole clocks. Can do funny things and this is where things start getting really interesting. Around. A black hole spacetime, warps and twists, slowing, time down. Scientists. Dream of sending a probe there to test their hypothesis. There's. A famous way of thinking about this called the twin paradox where, two, twins are born on exactly the same time right so they're the same age but one of them zips very very close to a black hole hangs, out awhile and then comes back if, I had an identical twin who. Stayed back on earth while I flew near a black hole when. We had our daily video phone, calls he would see me. And. I would see him. Talking. Funny we. Would literally notice, that. Time is running in a different pace for, the other one, the. Closer to the black hole the, slower time passes. If. Instead of coming back home I accidentally, fell backwards, into the black hole my twin back on earth would see me slow down even more ago. And. Completely. Dried the halt and seemed, frozen, on the event horizon, time.
Appears. To stand still. Why. We just have a sinking, feeling that that, would be able to come home again. But. If the twin could escape from the black hole he. Would be returning, to the future, maybe. It's only been a few days or weeks, experienced. By the one that traveled to the black hole while, the other is, you. Know gray-haired. And as grandkids. By now as it lived decades. Here, on earth. The black hole warped space-time so, much that. The ultimate science-fiction, fantasy. Becomes. Reality. Time. Travel is a staple. Of science fiction and, we know that time travel into the past, appears to be, ruled, out in our universe, but. Time travel into the future is totally, acceptable. Time. Travel, is impossible just. Yet when, space-time, has a very real effect on our daily lives. It. Controls how we age. The, key to. Different. Rates and flows of time is, gravity. If you experience different, gravitational. Environment. You will have a different flow of time. As. I climb up these stairs and I put myself further away, from the mass of the earth my, own clock, runs, a little bit faster, if, you go down closer, to the surface the more your clock slows down. We. Have sensitive. Enough, clocks, that, we can measure this different, flow of time. Exaggerate. This effect and we, would see the flow of time change. In front of us. Those, closer, to the earth would. Look slowed, down those. Higher, up the. Opposite which. Means the, wealthy in their pent houses actually. Would. Age faster, than people on the ground this. Is a, mind-blowing. Concept, but. It's reality. Earth's. Gravity even controls, time high, above the planet, twelve. And a half thousand, miles up there's, an array of global, positioning, satellites, crucial. To the navigation, systems, and our cars and cell phones we. Here on earth use, the, global positioning system as a way of getting around okay most people these days would be lost if they have to go more than about a kilometer from their house unless they have their GPS app on their phone to tell them where to go, the. GPS, receiver in, your cell phone bounces. Signals, over four satellites, to figure out exactly where you are. It's. An exercise in precision, timing. Onboard. Each satellite, is, an atomic clock. The. Weaker gravity, in orbit means the satellite, clocks tick, fractionally. Faster, than, those on the ground. If. We didn't know to, correct, for the fact that the clocks and our satellites move at different rates the, GPS system here on earth would not work it. Would actually lose accuracy, at such a rate that the, entire global positioning system will become useless in less than an hour we correct for that every, moment of every day. Space-time, has, controlled, every, phase of the universe's, evolution since. Its birth. Now. We're, discovering, space-time. Will also dictate how. The universe, will. Die. Our, universe, started, with a bang. 13.8. Billion, years ago. It's. Been expanding, ever since. Will this expansion, last forever. Or. Will our universe, come. To a violent, end. For. Almost a hundred years we've now known that the universe is expanding everything. In the universe is expanding away, from everything else, we. Can test this by measuring, light from, exploding stars. Type. 1a supernovas. All explode, with the same brightness so. Scientists, can accurately work, out their distance, from Earth. For. Decades astronomers have. Measured, this light being stretched, by, expanding, space-time. The. Universe is expanding and there's matter in it that matter has gravity, and that is distorting. The curvature, of space-time so it made sense to us that as the universe expanded. All of the matter in the universe would, hold onto each other gravitationally. If. There's enough matter in the universe it, can actually pull on itself enough that the expansion, gets slower.
But. In 1998. Astronomers. Took new measurements, and, made a sensational. Discovery. People. Had expected it to be slowing, down to decelerate but, instead they found the opposite the expansion is accelerating. If. Expansion. Was slowing, then. These distant, lights should. Seem, brighter, instead. They, were dimmer. They, were getting farther, away much. Faster, than expected. It. Could only mean one thing. That. Expansion, is getting faster, it's accelerating. Every day. This. Discovery, turned, our understanding. Of the universe upside. Down. For. The first seven billion years of the universe the rate at which the universe was expanding was. Going slower and slower but. Then something. Crazy happened, It, was, as if gravity. Had become, the, opposite, instead of attracting. The galaxies, it was almost as if it was pushing, them apart that's, a very surprising result we're, still struggling to understand it. Was. Gravity, losing its power. Where was there something else, pushing, space apart. There's. Another, ingredient, in, our universe, an ingredient, that behaves. Very. Oddly the mysterious, quantity called, dark, energy. Like, space-time, dark, energy, is all around us. We. Can't see it but it makes up 70% of, the, stuff in our universe, but. What is it exactly, dark. Simply, means that we have no idea what it is we don't know what form it is in something. Is pouring, energy into the universe causing, it to accelerate we. Don't know what it is no clue whatsoever we don't have the slightest explanation, it's the biggest mystery in science today. Dark, energy, behaves in mysterious ways. Ordinary. Matter is attractive. Dark. Energy is repulsive, that's, why it's causing an acceleration. Ordinary. Matter feels gravity, it comes together with, this stuff doesn't. Is. Dark energy a new force in the universe or. Like gravity, could, it come from space-time, itself. Dark. Energy may very well be a property, of space-time, it may be that space itself, has an energy and it's this energy that's driving it to accelerate in its expansion. Dark, energy is a thing we don't really know exactly what, it is but it will have a huge, effect on the future changes, in the universe. So. What will happen if dark energy keeps. Accelerating the, expansion of, our space-time, universe. Because. Of the presence of dark energy it'll expand faster, and faster and faster which, means the universe is going to become a lonelier, and lonelier place. To be all. The galaxies, are accelerating. Away from each other the. Universe gets dimmer. And dimmer and, colder, and colder everything, gets darker, and more desolate, and right, now that is the leading candidate, for what's going to happen in our future. Eventually. Our space-time universe. Freezes. The. Big freeze is the. Ultimate. Endgame of the universe, as we know it it is an, ugly, fate, it's a depressing fate, but luckily for us it's not until, an, unimaginably. Long time from now. Trillions. Of years from now the universe could end in, a big freeze. But, a 2017. Study hints, had an even more frightening possibility. Dark. Energy, might, be getting stronger. One. Horrible. Scenario, for, the ultimate fate of the universe is, if, dark, energy eventually. Grows so strong enough that it can overwhelm the gravitational. Attraction of, a galaxy itself it's. Even able to rip black holes apart. The. Very fabric that, holds everything together to be ripped apart this, idea is called the big rip first. Clusters, then galaxies, like our own Milky Way will be torn apart. Then. Our solar system, will break up. And. In the final half-hour, of the universe the, earth will, explode.
In. The final second, atoms. Will, vaporize. Everything. In the universe would individually, be torn, apart by. The expansion, of space we. Don't understand, dark energy is it constant, is it getting stronger is it getting weaker at this, stage we. Simply don't know. The, future of our space-time universe. Hangs, in the balance, will. It end in a big rip a, big. Freeze. Or. Is, the end really. Just. The beginning. Spacetime. Controlled. The birth of our universe it. Will also dictate its. Death. Now, we're discovering these two events may, be linked, a link, that. Reveals a flaw in, our understanding of the Big Bang. Everything. We can now see all the, matter all the energy in our universe, was. Once contained, in a region smaller than the size of an atom. We. Call this tiny infinitely. Dense point, a singularity. Singularities. Are predicted. By the general, theory of relativity. But. The universe, is also governed, by, another set of rules. Quantum. Mechanics. Quantum. Mechanics, is our, description. Of the sub atomic, realm, of. Fundamental. Particles. And fields and forces in how they interact. Quantum. Mechanics, says that nothing can. Be infinitely, small, or. Dense. So. Singularities. Can't. Exist. Singularity. Is a bit where everything, kind of goes to hell because the densities become infinite, gravitational. Forces become infinite things just sort of break down there in the equation sort of stop making sense. No. Singularity. Would mean no Big Bang as we understand, it so, then how, did the universe spark, into existence. Scientists. Now think they. Have an answer a, solution. That. Works with both general, relativity, and, quantum. Mechanics. Quantum. Space-time. A. Successful. Theory of quantum space-time should, answer the question of what really happened, in the earliest moments of our universe, hopefully. The. Correct quantum theory of gravity won't have any, singularities. It will replace the. Big Bang with something, else if, we only knew what that something else was we, might have a clue as, to how and why the universe, began. In. A quantum, space-time Big, Bang there, was no singularity. Bursting. From nothing. The universe, formed. From, the remnants of another. Dying. Universe. It's. Possible, that before the Big Bang there was still universe there was still space and time but, rather than expanding, the universe was contracting. Perhaps. Universes. Don't end in rips or freezes. Perhaps. They, collapse. An. Ancient, universe, expands. But. Then begins to collapse under its own gravity. Crunching. Space-time, down, to a spec. But. Instead of forming a singularity. Space-time. Once. Again. Explodes. As. Matter gets more dense than, as the matter crunches, down this. Force, will, push everything back out the, universe, would bounce and, reignite.
In, A new round of expansion, a new Big Bang what we perceive, as the Big Bang is the aftermath, of that bounce. This. Suggests that, the, space-time that, dictates, our lives today, comes. From the collapse of an old universe, and, we live in, an infinite, space-time. Cycle, of birth, death and, rebirth. A bouncing. Space-time. Universe, if. We live in a bouncing universe it's very plausible the universe is infinitely old that it's gone through an infinite series of bounces and there is no absolute, beginning, it could be that we are just one iteration. Of an infinite, number of cycles, in the lifetime, of some, meta universe. We. Barely understand. Space-time. Perhaps. We, will never understand. It completely. But, one thing is clear without. Space-time, we. Would. Not be here. Space-time. Is something absolutely real. It's really part of the fundamental, architecture the, furniture, of reality. To. Really understand, the ultimate fate of our cosmos it's not enough just, look more with our telescopes, you also have to understand, the basic nature of space-time. You. You. Really are right now living in a far more complex, and beautiful universe, than. The human mind can, comprehend. You.