The Terrifying Truth That Proves We Are Not Alone In The Universe

追加: 2026-06-01

[00:00:02]700 million lighty years away, there is a region of space so empty that scientists named it the great nothing.

[00:00:11]Not poetically, because they genuinely could not think of a better description.

[00:00:18]A perfect sphere of almost total absence, 330 million lighty years across, where roughly 2,000 galaxies should exist and only 60 do. We have no complete explanation for it. We have theories. We have mathematics, but nothing that fully accounts for something this empty existing in a universe this young. And the leading scientist who found it said something that has never left the field since.

[00:00:58]In 1981, a team of astronomers at the University of Michigan set out to do something methodical and unglamorous.

[00:01:08]They wanted to map the universe in three dimensions, not all of it. a meaningful slice of it. The tool they used was red shift, the stretching of light waves from galaxies moving away from us.

[00:01:23]Because the universe is expanding, the farther a galaxy is, the faster it recedes, and the more its light shifts toward the red end of the spectrum.

[00:01:33]Measure the red shift. Calculate the distance.

[00:01:38]Plot the position.

[00:01:40]Do that for enough galaxies and you start to see the shape of the cosmos.

[00:01:45]Robert Kersner led the effort as part of the Harvard Smithsonian Center for Astrophysics observational program. The goal was straightforward.

[00:01:55]Understand how galaxies are distributed across space. Build the map. See what emerges.

[00:02:03]What emerged was something nobody was prepared for. Kersner and his team ran three separate pencil beam red shift surveys, each aimed at slightly different patches of sky separated by 35°.

[00:02:19]In all three surveys at velocities around 15,000 km/s, there was a gap, a blank, a stretch of the red shift distribution where nothing appeared.

[00:02:33]No galaxies, just absence.

[00:02:37]They followed up in 1987 with a broader survey of 240 bright galaxies across the region. A uniform distribution of matter would have predicted that 31 of those 240 galaxies should have red shifts in the empty range. The actual number was zero.

[00:02:59]Out of 240 targets, not a single one landed where the universe should have placed them. They called it the great nothing.

[00:03:10]Later it was named the Boers's void after the constellation it appears to occupy in the sky. Boers meaning the herdsman, the figure in ancient Greek mythology who drives the plow around the North Pole. A peaceful agricultural image. The name attached to one of the most disquing structures ever found in the observable universe.

[00:03:36]Now, here is where you need to stop and actually absorb the numbers. The boulder's void is roughly spherical. Its radius is 62 mega parex, which translates to just under 200 million lightyear. Its diameter runs to approximately 330 million lightyears across. Its center sits 700 million light years from Earth. And within that volume, a region of space so vast that it constitutes roughly 0.27% of the entire observable universe.

[00:04:13]Astronomers have found 60 galaxies.

[00:04:16]60.

[00:04:18]The expected number for a region this size is approximately 2,000.

[00:04:22]That is not a statistical fluctuation.

[00:04:26]That is a 97% deficit. The universe is almost entirely absent from a space large enough to swallow entire galactic superclusters whole.

[00:04:38]If you stood at the center of the Brutus void, you would see fewer than one galaxy per billion cubic light years in any direction you looked.

[00:04:49]Let that sit for a moment. Astronomer Greg Aldering put it in terms that have stayed with the scientific community ever since.

[00:04:58]If the Milky Way had been located at the center of the bolter's void, we would not have known that other galaxies existed until the 1960s.

[00:05:09]Not because we lack the technology earlier, because there would have been nothing to detect.

[00:05:16]We would have grown up as a civilization, developed science, built telescopes, pointed them at the sky, and found only darkness. the entire history of human astronomy conducted in ignorance of the wider universe not as a hypothetical as the measurable consequence of where we happen to be. Now the boat's void is not completely empty. There is something inside it and what is there is strange in its own right. Kushner's team initially found only one spiral galaxy inside the void. It became known informally as the loneliest galaxy in the universe.

[00:05:58]Subsequent surveys brought that number up to 60 total. But those galaxies behave differently from the ones we are surrounded by because they have evolved in near total isolation. Without neighboring galaxies to interact with, without mergers, without the gravitational push and pull of dense cosmic environments, they have retained unusually pristine structures.

[00:06:25]Many are rich in neutral hydrogen and molecular gas, meaning they are still actively forming stars despite having almost nothing around them for hundreds of millions of light years. Some have developed irregular or extended disc shapes not commonly seen in the crowded regions of the universe. They are in a sense galaxies that have never been touched by anything. Fossils of a quieter, emptier kind of cosmos.

[00:06:56]A detailed spectroscopic survey of the void also found that the few galaxies present show unusually strong high exitation emission spectra. Their internal physics is behaving differently, but there are not enough of them to come anywhere close to filling the absence. Here's the thing that makes the boat's void genuinely difficult to explain rather than just unusually large. The universe is 13.8 billion years old. Cosmic voids form through a process of gravitational competition.

[00:07:32]Regions of slightly lower matter density attract less material over time, growing emptier as matter flows outward toward denser filaments and clusters.

[00:07:44]This process is real, well understood, and produces the cosmic web structure we observe across the universe. Voids are a natural feature of that web. But that process has a speed limit imposed by the age of the universe itself.

[00:08:01]Given 13.8 billion years of gravitational dynamics and cosmic expansion, the largest voids that should have had time to form are measured in tens of millions of light years, not hundreds.

[00:08:18]At 330 million lighty years across, the Buddha's void is an order of magnitude larger than what standard cosmological time scales can produce through known physics. And there is one more detail that deepened the mystery. When scientists mapped the cosmic microwave background, the ancient light left over from the early universe that fills all of space, they found a vast cold spot in the direction of the Bo's void. A region of the CMBB that is measurably cooler than the surrounding sky, sitting precisely where the void does.

[00:08:59]Many scientists consider this the most significant anomaly in the observable universe.

[00:09:06]Something made the boat as void.

[00:09:09]Something emptied it on a scale and to a degree that our best models of cosmic structure formation cannot fully account for. And whatever that something is, it left behind 60 isolated unusual galaxies drifting in a sphere of near total silence. 330 million lighty years wide, while the rest of the universe built itself into the web of clusters and filaments we see everywhere else. The question of what caused it is where things get genuinely uncomfortable.

[00:09:54]Three theories exist to explain the bolt's void. Each one answers part of the question. None of them answer all of it. And one of them, the scientific community would prefer you not take too seriously even though they cannot technically prove it wrong. The first and most widely accepted explanation is called the merging voids hypothesis.

[00:10:20]The idea is that the boat's void did not form as a single structure. It formed as many smaller voids, each developing independently through normal gravitational processes that gradually drifted together and merged into one enormous supervoid.

[00:10:37]As the universe expanded, the boundaries between these adjacent underdense bubbles were stretched and dissolved, coalescing into the structure we observe today. The few galaxy chains found inside the void, those sparse threads of matter running through the emptiness, maybe remnants of the original walls that once separated the smaller individual voids before they merged. It is a reasonable explanation. It is compatible with standard cosmology and it works to a point. The problem is the shape. Merges between structures tend to produce irregular asymmetric results.

[00:11:20]When smaller voids combine, the product is usually something uneven with ragged boundaries and an inconsistent internal density. The B's void is almost perfectly spherical. Its under density is remarkably uniform across its interior. That kind of coherent symmetric structure is not what you typically get from a collision of smaller independently evolved regions.

[00:11:47]It is what you get from something that formed as a single entity which brings the merging voids hypothesis back to the same problem it was trying to solve. A single void this size should not exist given the age of the universe.

[00:12:06]The second theory reaches further back in time.

[00:12:10]Some physicists propose that the boater's void is not a product of gravitational dynamics at all. It is a relic of the inflationary epoch. The fraction of a second immediately after the big bang when the universe underwent exponential expansion at a rate that makes everything that came after look glacially slow during inflation. Quantum fluctuations in the energy field were stretched to cosmic scales. A region that began as a microscopic under density in the quantum foam could have been inflated into an enormous bubble of low density space before a single atom or galaxy ever formed. Under this model, the Bo's void was not emptied. It was never filled. It entered the postinflationary universe already carrying a deficit of matter. A fossil of a quantum event that occurred before physics as we understand it had fully stabilized.

[00:13:14]Dark energy then amplified it further.

[00:13:17]As the expansion of the universe accelerates, under dense regions grow more under dense. The distances between what few galaxies exist inside the void increase.

[00:13:30]The surrounding filaments and clusters pull matter away from the void's interior, deepening the emptiness over billions of years. Under this picture, the border's void is not an anomaly. It is an inheritance from the first moments of existence, still growing. This theory is elegant. It connects the void to fundamental cosmology and does not require anything exotic. But it is also by its nature extremely difficult to test. The inflationary epoch left few direct fingerprints and the connection between quantum fluctuations 13 billion years ago and a specific supervoid today involves a chain of inference that is long and uncertain.

[00:14:20]Which brings us to the third theory.

[00:14:23]the one that gets dismissed in academic papers with a single sentence and then keeps coming up. Anyway, in 1964, Soviet astronomer Nikolai Kardashev published a framework for thinking about extraterrestrial civilizations based on their energy consumption.

[00:14:44]He proposed a scale. A type one civilization harnesses the full energy of its home planet.

[00:14:52]Type two controls the energy of its entire star. Type three commands the energy of an entire galaxy. A civilization at the upper end of the cardf scale operating across millions of star systems consuming stellar energy on a galactic scale would leave a mark on the cosmos.

[00:15:14]It would restructure matter. It would deplete resources across enormous volumes of space. And if it had been doing this for long enough, for billions of years across a region 330 million lighty years wide, it might leave behind something that looks from a distance exactly like the boat's void. The argument is not that aliens built the void. The argument is that something systematically removed or prevented the formation of galaxies across a volume that standard physics cannot adequately explain in the time available. The void is too empty. It is too spherical.

[00:15:57]It formed too fast. Gravity alone operating over the age of the universe does not produce this. So the question becomes genuinely open. What does? We also still do not know why so few galaxies formed inside the void in the first place. The dark matter and gas that should permeate even the emptiest regions of the universe were there at the beginning.

[00:16:22]Something either depleted them, repelled them, or prevented them from condensing into structures.

[00:16:30]None of the three theories fully explains why the star forming material itself is absent rather than simply dispersed.

[00:16:38]There's also the broader problem of what the bolter's void does to cosmologyy's foundational assumption. The cosmological principle states that the universe on sufficiently large scales is homogeneous and isotropic.

[00:16:55]It looks the same in every direction from every location. This is not just a convenient assumption. It is the philosophical bedrock on which modern cosmology is built. The equations of general relativity as applied to the universe at large depend on it. Without it, the standard model of cosmic evolution become significantly more complicated to construct.

[00:17:20]The boot's void does not definitively break the cosmological principle. The official position is that it is compatible with the lambda cold dark matter model of cosmological evolution.

[00:17:35]But that compatibility comes with an unspoken qualifier.

[00:17:39]It is compatible as an extraordinarily rare statistical event. Something that the model permits but does not predict.

[00:17:49]Something the universe could have produced but almost certainly should not have. How rare exactly is a matter of ongoing debate that has not been resolved.

[00:17:59]What is clear is this. The borders void is not just a large empty space. It is a laboratory.

[00:18:07]Studying it gives astronomers a view of what the universe looked like before large scale structure fully developed when matter was just beginning to find its way into galaxies and the cosmic web was still assembling itself.

[00:18:23]It's a preserved snapshot of an earlier emptier cosmos. And as dark energy continues to accelerate the universe's expansion, voids across the cosmos are growing. The filaments are thinning. The clusters are becoming more isolated.

[00:18:41]Some cosmologists believe the far future of the universe will not be a dense web of galaxies, but an endless collection of voids. Each one separated from the next by distances too large for light to ever cross. If that is where everything is heading, the Boers's void is not an anomaly. It is a preview. And we still do not know what made it. The Bo's void has been sitting 700 million light years away since before any human civilization existed.

[00:19:14]Asking a question that our best physics has not fully answered. That is what keeps astronomy honest.

[00:19:23]If this video made the universe feel a little bigger and a little stranger, subscribe to Uncharted Odyssey. This is exactly what we do here. Follow the questions that do not have clean endings. Thank you for watching. See you in the next one.