The Summo-Verse: A Plain-Language Guide

Here is a thing worth admitting before we start. Nobody, not a single person alive, can actually picture how big the universe is. You can say the words. You can write the numbers down. But when you close your eyes and try to hold it, your imagination quietly cheats and shrinks everything to something you can manage. An atom and a galaxy end up feeling about the same size in your head, because your head is not built to feel the difference.

That failure of imagination is not a weakness here. It is the doorway. Because once you accept that you genuinely cannot tell how big or small something really is just by feeling it, a strange question stops sounding silly and starts sounding open: what if our entire universe — all of it, every galaxy we can see — is small? Not small compared to itself. Small compared to something else.

The Summo-Verse takes that question seriously and follows it wherever it goes. Let me walk you through it — and I will be straight the whole way about which parts are established science and which parts are an honest guess.

OneThe things too big to picture

Start with a black hole. You have probably heard of them: a place where so much mass is packed into so little space that not even light can climb back out. Real. Observed. Photographed, even.

Now do the thing your imagination hates. Keep making it bigger. Not twice as big. Not a thousand times. Make it so unimaginably massive that our whole observable universe — the entire thing we can see in every direction — would be a small feature next to it. A speck against its bulk.

That is a Summo. The name spelled out is a mouthful — Super Massive Massive Object — so we just call them Summos. Think of them as black holes taken to an extreme that breaks the mind, which is exactly the point. Your mind is supposed to break here. That is the honest response to the scale.

And there are a lot of them. Roughly a trillion trillion — about as many Summos as there are stars in a large galaxy. Picture a galaxy, then swap every glittering star for one of these monsters, drifting.

Drifting through what, though? This is the second idea you need, and it is a gentle one. The Summos do not float in perfect nothingness. They move through a kind of medium — a fabric that fills the space between them. Do not imagine a fog or a fluid you could swim in. Imagine instead that empty space itself has a texture, a condition, a way of pushing back. Our own universe has something like this — physicists call it the quantum vacuum, and it is very real — but here it exists on a scale as far above ours as an ocean is above a raindrop.

One more piece and the stage is set. When a Summo moves through this medium, the medium gathers around it. Clusters. A heavier Summo drags a thicker cloak of medium along with it; a lighter one, a thinner cloak. If that idea rings a faint bell, it should — it is built to echo the Higgs mechanism, the thing in our universe that gives particles their mass by dragging a field around with them. Same shape of idea. Vastly bigger stage.

TwoHow to start a universe

So we have these enormous objects, each wearing a cloak of gathered medium, drifting through a shared fabric. Now let two of them wander toward each other.

Here is the first surprise. Because each Summo carries that cloak of medium around it, the two of them never actually need to touch for something dramatic to happen. Their cloaks meet first. Long before the Summos themselves come close, the medium bunched around one presses into the medium bunched around the other.

Think of two people walking toward each other through deep water, each pushing a bow-wave ahead of them. The waves collide well before the people do. And right where the two cloaks slam together, three things happen at once — and it is the fact that they happen together that matters.

First, pressure. The medium at that meeting point is being squeezed from both sides, crushed harder and harder as the Summos approach. Maximum compression.

Second — and this is the key part — gravity cancels. Each Summo pulls with its own colossal gravity, but at the exact midpoint between them the two pulls face in opposite directions and neutralise. Right there, at the point of maximum squeeze, there is nothing holding the medium down. The lid comes off precisely where the pressure is highest.

Third, the exits are blocked. The medium is being crushed, and it wants to escape — but along the line joining the two Summos, there is a Summo sitting in the way at each end. It cannot go that direction. The only way out is sideways, perpendicular to the approach, squirting out at right angles like a watermelon seed pinched between two fingers.

So: maximum pressure, no gravity to restrain it, and only one direction to go. The compressed medium erupts outward along that one open plane. That eruption is the Big Bang. Not a mysterious explosion from nowhere. A release — the exact moment the squeeze finds its one available exit.

And notice what the origin is. It is not a single point, the way the textbook Big Bang is usually drawn. It is a plane — a flat sheet, the contact zone between two spheres so titanic that where they nearly touch, the surface looks perfectly flat to anything as small as us. Stand on a beach ball and it curves away beneath you. Stand on the Earth and it looks flat, because the Earth is so much bigger than you. Stand on a Summo and “flat” does not begin to cover it.

This turns out to matter, because when astronomers actually measure the shape of our universe, they find it is flat — genuinely, stubbornly flat — and standard cosmology has to work rather hard to explain why. In this story it comes for free. We are flat because we were born on a flat plane between two unthinkable spheres.

ThreeThe stuff we cannot see

Now, a real and genuinely embarrassing fact about the actual universe: most of it is missing. When astronomers weigh galaxies by how they spin, the ordinary matter — stars, planets, gas, you, me — comes out to only about a sixth of the total matter that must be there. The other five-sixths of the matter is invisible, and we call it dark matter. Worse, when you weigh the whole cosmos by how its expansion is speeding up, even all that matter together is dwarfed by an invisible push driving everything apart, which we call dark energy. Two different holes in the bill, and both names are really just labels for our ignorance.

The Summo-Verse has an answer for both, and it comes straight out of the story we have already told.

That compressed medium, once it erupts, does not stay what it was. It changes state — the way water becomes steam under heat. Most of it becomes something with weight, something that pulls with gravity, but that does not interact with ordinary matter. It does not clump into atoms. It does not shine. It just sits there, heavy and dark. That is the dark matter: the bulk of the erupted medium, transformed but invisible.

Only a smaller fraction of the medium crosses the extra threshold needed to become the bright, interacting matter we are made of — and it does so at special spots, where the outrushing waves overlap and reinforce each other, like the bright bands where two sets of ripples on a pond cross. The ratio between the two — roughly five parts dark to one part visible — is not tuned by hand. It falls out of how strongly the medium couples to itself, a fixed property of the larger cosmos. Five to one is, remarkably, close to what astronomers actually measure.

Dark energy — the mysterious push — has two explanations, and both apply.

The first: remember that our universe was born at the one spot where the two Summos’ gravity cancelled. But it does not stay there. As it expands, it drifts away from that perfectly balanced midpoint, out into regions where the cancellation is no longer clean, where one Summo starts to win the tug of war. The further out we go, the more lopsided the pull, and that growing imbalance tugs the expansion along faster and faster. We are, in a sense, being pulled off-centre by our own parents.

The second is simpler. Our universe is a bubble, and the medium outside it is denser than the medium within. A bubble in dense surroundings rises — think of an air bubble climbing through water, pushed upward by simple buoyancy. Our whole cosmos may be doing something like that: swelling outward because it is lighter than what surrounds it. Two pushes, one accelerating universe.

FourThe bruise on the oldest light

This next part is my favourite, because it is where the story reaches out and touches something we have genuinely measured.

When the universe was very young — about 380,000 years old, a newborn by cosmic reckoning — it cooled just enough to turn transparent, and the light set free at that instant has been travelling ever since. We can still catch it: it arrives from every direction as a faint microwave glow, and we call it the Cosmic Microwave Background. It is, quite literally, the oldest light there is — a baby photo of everything.

And it is almost perfectly smooth. Look one way, look the opposite way — same temperature to a stunning degree of precision. That smoothness is one of the great confirmations of modern cosmology.

Almost. Because when two exquisite space telescopes, WMAP and then Planck, mapped that ancient light in fine detail, they found something faint and stubborn that will not go away. One half of the sky is very slightly louder than the other — a touch more texture, more power, on one side than the far side. As if the baby photo has a faint bruise down one hemisphere. It has a preferred direction, and the universe is not supposed to have a preferred direction. Standard cosmology has no comfortable reason for it. It is a genuine, published, unexplained oddity.

In this framework, the bruise is a birthmark. Our universe was born between two Summos that were approaching along a particular line — and no two Summos are exactly alike, so one side of that encounter was always a little heavier than the other. That lopsidedness would leave a faint directional imprint pressed into the newborn universe, a stretch-mark along the axis our parents came in on. The preferred direction in the oldest light would simply be the direction they were closing from.

And here is the part that makes the whole idea feel, for a moment, less like a story and more like a machine that fits together. That same small inequality — the fact that the two Summos were never identical twins — is asked to do three separate jobs. It explains why a specific pair of them would fall toward each other at all. It offers a reason why matter narrowly beat antimatter in the early universe, so that anything survived to exist — another of the deep unanswered questions in real physics. And it explains the mark on the oldest light. One structural fact, unequal Summos, doing three separate jobs. When a single assumption keeps paying off across unrelated problems, that is the kind of thing that makes you look twice.

FiveHow you could prove it wrong

Now the most important section, and the one that keeps this honest. A story that explains everything and predicts nothing is entertainment, not science. The line between them is simple: a real idea has to stick its neck out and tell you what would prove it wrong. So here is where the Summo-Verse sticks its neck out.

The cosmic web should line up. Galaxies are not scattered at random. They hang in vast filaments — long bright threads with dark voids between them, like a cosmic cobweb. If our universe carries a birthmark from the direction its parents approached, then the grandest of those threads should tend to line up with the same axis as the bruise in the oldest light. Two surveys now mapping the sky in enormous detail, Euclid and DESI, are exactly the tools to check this. If the biggest filaments point every which way with no relation to that axis, the idea is in serious trouble.

The dark matter hunters should keep coming up empty. All over the world, exquisitely sensitive detectors sit in deep mines waiting for a particle of dark matter to bump into them. So far: nothing. In most theories that silence is a disappointment. Here it is a prediction. Summo-Verse dark matter is transformed medium that does not talk to ordinary matter at all — so those detectors should go right on finding nothing, forever. That is a bold and slightly uncomfortable thing to predict, which is precisely what gives it teeth. If someone does catch a dark matter particle tomorrow, this part of the framework is wrong, and cleanly so.

The great structures may be fossils of the birth. The framework says visible matter condensed at the bright overlap-spots where the erupting waves reinforced each other. If so, the largest concentrations of matter we see — things like the Great Attractor, a mysterious gravitational pull dragging our whole neighbourhood of galaxies toward it — might not be random pile-ups at all. They might be the fossilised pattern of that first flat-plane release, still legible in where the galaxies gathered.

None of these is proven. Every one of them is a place the idea has chosen to be vulnerable. That is the point of listing them.

So that is the whole shape of it. Objects too large to picture, drifting through a fabric that gathers around them. Two of them lean close, their gathered cloaks collide, and in the crushed, weightless, one-way-out moment between them, a universe squirts free — flat, lopsided, most of it dark, forever drifting off-centre and rising like a bubble. And the faint bruise on the oldest light we can see is, just maybe, the fingerprint of the two parents it was born between.

It might be wrong. Large parts of it probably are. But it hangs together, it comes from taking one honest human limit — that we cannot feel the scale of things — completely seriously, and it is brave enough to tell you how to catch it out. In a subject this humbling, that is not nothing.