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Scientists Discover Way to Send Information into Black Holes Without Using Energy

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Is the Universe Not the Same Everywhere? DESI Data Challenges One of Cosmology’s Biggest Assumptions

For decades, scientists have believed that the universe, when viewed on extremely large scales, should look the same in every direction. This idea, known as the cosmological principle, is one of the foundations of modern cosmology. It suggests that although the universe may appear messy and uneven at smaller scales, its overall structure should become smooth and uniform when observed across billions of light-years.

However, new observations from the Dark Energy Spectroscopic Instrument (DESI) are raising questions about this long-standing belief. After mapping the positions of 47 million galaxies across nearly 11 billion light-years, researchers suggest that the universe may not be perfectly identical in all directions, even at enormous cosmic scales.

The findings, reported by astronomers Francesco Sylos Labini and Marco Galoppo, indicate that large-scale patterns in the distribution of galaxies may contain unexpected directional differences. If confirmed, this discovery could force scientists to rethink some of the basic ideas used to understand the evolution and structure of the universe.

The Cosmological Principle: The Universe Should Look the Same Everywhere

The idea that the universe is the same in every direction comes from the cosmological principle, which is closely connected to the Copernican principle. The Copernican principle states that Earth and humanity do not occupy any special or privileged position in the universe.

According to this idea, an observer located anywhere in the universe should see roughly the same large-scale cosmic structure. This does not mean every region looks identical. On smaller scales, the universe is clearly uneven. Galaxies form clusters, galaxies are connected by enormous filaments of matter, and there are vast empty regions called cosmic voids.

Imagine looking at a piece of fabric. If you zoom in closely, you can see individual threads, gaps, and irregular patterns. But if you move far away and view the entire fabric, it appears smooth and consistent. Scientists expected the universe to behave in a similar way — becoming more uniform as we look at larger and larger scales.

This assumption has helped scientists build models of the universe, including the widely accepted ΛCDM model, which describes a universe dominated by dark energy and dark matter.

The Cosmic Web: A Universe Full of Hidden Structures

Modern astronomical surveys have revealed that the universe is not randomly filled with galaxies. Instead, galaxies form a gigantic structure known as the cosmic web.

This cosmic web contains long chains of galaxies called filaments, massive galaxy clusters, and enormous empty regions called voids. At smaller scales, these structures create clear differences depending on the direction we observe.

The major question has always been: At what scale does the universe become smooth?

Some studies using observations of cosmic background radiation have supported the idea that the universe is isotropic, meaning it looks the same in every direction. However, other research has suggested that uneven structures may continue across much larger distances than expected.

The challenge has been determining whether these differences are real cosmic features or simply statistical variations caused by limited observations.

DESI’s Massive Map of the Universe Reveals Unexpected Patterns

The DESI project has created one of the largest three-dimensional maps of the universe ever made. By measuring the light from millions of galaxies, scientists can determine their positions and study how matter is distributed across space and time.

Researchers behind the new study used a method called Angular Distribution of Pairwise Distances (ADPD). Unlike previous approaches that mainly searched for a specific preferred direction in the universe, this method examines broader patterns in how galaxies are distributed across different distances and angles.

The results showed something surprising.

According to the researchers, DESI galaxy data revealed signs of persistent anisotropy — meaning the universe’s structure appears to vary depending on the direction observed — even at scales approaching gigaparsecs.

One gigaparsec is roughly 3.26 billion light-years. This means the observed differences exist across distances thousands of times larger than many previous studies had examined.

The researchers argue that galaxies appear to remain connected in directional patterns over much larger distances than expected under the standard cosmological model.

They describe the finding as evidence that “directional coherence persists to larger scales than predicted,” challenging the traditional assumption that the universe becomes completely uniform at extremely large distances.

Does This Mean Einstein’s Universe Model Is Wrong?

The discovery does not mean that current theories of the universe are immediately proven incorrect. Scientists are careful because extraordinary claims require strong evidence.

The study itself has limitations. It does not yet explain why these possible large-scale differences exist or what physical process created them. It is also possible that the universe eventually becomes isotropic at even larger scales that humans have not yet measured.

However, if future observations confirm these patterns, cosmologists may need to expand their understanding of how the universe works.

The cosmological principle plays a major role in simplifying equations that describe the universe. If large-scale anisotropy truly exists, scientists may need to explore more complex models that allow the universe to contain larger variations in structure.

New Possibilities for Understanding Dark Matter and Cosmic Evolution

A universe that is not perfectly uniform could open the door to new explanations for some of the biggest mysteries in cosmology.

Scientists may need to investigate whether unknown properties of dark matter, interactions between cosmic structures, or effects caused by uneven distributions of matter could influence how the universe evolves.

Some theories suggest that the acceleration of cosmic expansion, usually explained by dark energy, might involve more complicated processes connected to the structure of matter itself.

The possibility of large-scale anisotropy could also encourage researchers to explore alternative solutions to Einstein’s equations of general relativity that allow for a more complex universe.

A New Chapter in Our Understanding of the Cosmos

The universe has repeatedly surprised scientists throughout history. From discovering that galaxies exist beyond the Milky Way to finding evidence of dark matter and dark energy, every major discovery has changed humanity’s view of the cosmos.

The DESI findings represent another possible turning point. They do not yet rewrite cosmology, but they raise an important question: Is the universe truly the same everywhere on the largest scales, or does it contain hidden patterns that we have only recently begun to detect?

As future observations continue, scientists hope to determine whether this is a temporary statistical mystery or evidence of a deeper truth about the structure of the universe.

One thing is clear: the cosmos may be far more complex and surprising than our current models suggest.

Reference: Sylos Labini, F., Galoppo, M. Detection of anisotropic cosmic structures on a gigaparsec scale. Nature (2026). https://doi.org/10.1038/s41586-026-10702-5

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