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the claim

The observable universe contains far less antimatter than ordinary matter.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
7 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that the observable universe contains far less antimatter than ordinary matter?

Yes. A reference work on baryon asymmetry states that matter makes up the vast majority of the observable universe, and several other sources (a chronology of the universe, a physics Q&A, a textbook, and preprints) similarly indicate antimatter is largely absent from the observable universe.

Verdict: SUPPORTED · 7 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 7
Chronology of the universe
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Chronology of the universe. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Chronology_of_the_universe

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More for · 6
Could the missing antimatter lie outside the observable universe?
2015
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Could the missing antimatter lie outside the observable universe?. (2015). physics.stackexchange.com. https://physics.stackexchange.com/questions/178088/could-the-missing-antimatter-lie-outside-the-observable-universe

Quantum Geometry Conserves Baryon Symmetry - The Matter - Antimatter Universe
2024
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Quantum Geometry Conserves Baryon Symmetry - The Matter - Antimatter Universe. (2024). doi.org. https://doi.org/10.33140/crsm.03.01.01

Evolutionary Quantization and Matter-Antimatter Distribution in Accelerated Expanding of Universe
2022
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Sandler, U. (2022). Evolutionary Quantization and Matter-Antimatter Distribution in Accelerated Expanding of Universe. doi.org. https://doi.org/10.2139/ssrn.4098765

Astronomy, the Evolving Universe
1985
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Zeilik, M. (1985). Astronomy, the Evolving Universe. books.google.com. http://books.google.com/books?id=EYPvAAAAMAAJ&dq=The+observable+universe+contains+far+less+antimatter+than+ordinary+matter.&hl=&as_pt=BOOKS&source=gbs_api

Baryon asymmetry - Wikipedia
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Baryon asymmetry - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Baryon_asymmetry

Paper 47:Spatial Quantum Phase Transition and Baryon Asymmetry: Asymmetric Decay Mechanism in the Huaxia Spacetime Total Conservation Theory
2026
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Paper 47:Spatial Quantum Phase Transition and Baryon Asymmetry: Asymmetric Decay Mechanism in the Huaxia Spacetime Total Conservation Theory. (2026). doi.org. https://doi.org/10.17605/osf.io/hfq9z

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