What is the biggest thing in the universe?

What we know: Matter is arranged in a cosmic web of filaments, walls, and voids on enormous scales. What we do not: Where one structure ends and another begins, which depends on survey methods and definitions.

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08 Field report pending intermediate

The Biggest Object in the Universe Isn't What You Think

The universe builds on scales that make galaxies look like dust.

Galaxies cluster into filaments and walls, vast web-like structures that span scales hard to picture. Even defining their boundaries is a research problem.

Infographic: The Biggest Object in the Universe Isn't What You Think

Field report pending

The largest known cosmic structures include galaxy filaments, walls, and superclusters. These challenge ordinary intuition about scale, though their definitions and boundaries can depend on survey methods.

Expected concepts

?What is the largest coherent structure in the universe?
?How much does the answer depend on how we define a "structure"?
?What do these scales tell us about how the universe grew?

Citation requirements

When this report is written, every measured or inferred claim will ship with a source and a confidence badge. No exceptions.

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