00:00This 3D diagram shows our sun, and what happens when we compare its volume to our home planet.
00:07You could pack one million Earths inside it.
00:10Despite how overwhelmingly massive that feels, astrophysics has long operated on a comforting premise.
00:18The universe follows strict, predictable structural rules.
00:22The most important of these rules is the cosmological principle.
00:26It states that if you zoom out far enough, matter in the universe distributes itself evenly.
00:32There are no wildly dense clusters dominating one side of space, while the other sits empty.
00:38Because of that required evenness, this theoretical grid displays a hard mathematical limit for cosmic architecture.
00:46According to our physics, no single structure can exceed a length of 1.2 billion light-years.
00:52Yet, astronomers have mapped a deep space anomaly that completely shatters this theoretical ceiling.
00:59To understand why the structure defies the laws of physics, we first have to train our brains to grasp the
01:06true scale of the cosmos.
01:08We have to climb the cosmic ladder.
01:11This diagram maps our solar system from the top down.
01:15We start climbing the ladder by resetting our baseline for massive.
01:19If we replace our sun with Stevenson 2-18, the largest known red hypergiant, its outer edge would swallow the
01:29orbits of Mercury, Earth, Mars, Jupiter, and reach all the way out to Saturn.
01:35To put that physical boundary in perspective, a commercial airplane flying along the surface of this star at cruising speed
01:43would take nearly 900 years to make a single trip around.
01:47Even hypergiant stars are tiny specks compared to supermassive black holes.
01:54Consider Tone 618.
01:56This single black hole contains the mass of 66 billion suns.
02:02This visual maps dozens of our solar systems against Tone 618's event horizon.
02:07The boundary where not even light can escape.
02:10You could fit our entire solar system inside it dozens of times over without ever touching the edges.
02:18These objects are huge, but gravity isolates them as single bodies.
02:23To find the true giants, we have to look at how gravity connects them.
02:28Zooming out to the galactic scale, our Milky Way contains hundreds of billions of stars.
02:34But IC 1101, the largest galaxy we've ever discovered, houses an astonishing 100 trillion stars.
02:44If you were to shrink the Milky Way down to the size of a city bus, IC 1101 would stretch
02:51across the landscape like an entire mountain range.
02:54Gravity's reach extends far past individual galaxies.
02:58Dark matter creates deep gravitational wells that pull thousands of these galaxies together into bound systems called galaxy clusters.
03:08The El Gordo cluster, for example, carries the total mass of roughly 3 quadrillion suns.
03:15Yet even this cluster is just a single knot in a much larger pattern.
03:20When we pull back to the ultimate macro scale, we see that deep space is highly organized.
03:28This image captures what astronomers call the cosmological web.
03:33Galaxies flow along glowing filaments of gravity, wrapping around vast, dark, empty bubbles called cosmic voids.
03:42Within this web, a single filament structure called the Sloan Great Wall stretches an incredible 1.37 billion light-years
03:54long.
03:55For a time, this was considered the maximum ceiling for cosmic architecture.
04:01Gravity takes billions of years to weave these massive networks, so scientists were confident they had found the upper boundary.
04:09Then, they looked deeper.
04:12This image shows deep space data from 2013, when astronomers mapped the distant universe using gamma-ray bursts.
04:22Triggered by the violent deaths of massive stars, these incredibly bright bursts serve as perfect markers for mapping matter in
04:31deep space.
04:32While plotting these markers, the mapping team found an anomaly.
04:37At a distance of about 10 billion light-years away, there was a shocking concentration of these dying stars, packed
04:45tightly together.
04:47This dense cluster revealed the existence of an interconnected galaxy-filament complex now known as the Hercules-Corona Borealis Great
04:57Wall.
04:58This diagram compares the Great Wall, a massive structure measuring 10 billion light-years across, against our established threshold.
05:09Occupying roughly 10% of the observable universe, it is nearly eight times larger than the 1.2 billion light
05:17-year limit allowed by the cosmological principle.
05:21Gravity requires time to pull matter together into interconnected filaments.
05:27Under our current models of the Big Bang, there simply hasn't been enough time since the dawn of the universe
05:33for gravity to assemble a structure this incredibly immense.
05:38The Hercules-Corona Borealis Great Wall is a fundamental physical paradox.
05:44Based on the time available since the universe began, it should not exist.
05:50Its presence in the deep dark proves that our understanding of gravity, time, and the evolution of the cosmos is
05:58missing a crucial piece.
05:59Devon Borealis Great Wall & The Enterprise
05:59Additional
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