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the claim

The universe expanded from a hot, dense state about 13.8 billion years ago.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
8 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 universe expanded from a hot, dense state about 13.8 billion years ago?

Yes. Multiple reference and peer-reviewed sources state that the universe expanded from a hot, dense primordial state, with the Lambda-CDM model and NASA dating that origin to about 13.8 billion years ago. A few sources give a slightly different figure (13.7 or 15 billion years) or frame the hot state as following inflation.

Verdict: SUPPORTED · 8 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 · 8
Age of the universe
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Age of the universe. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Age_of_the_universe

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More 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

Isn't the universe older than 13.8 billion years?
2022
Get citation
Isn't the universe older than 13.8 billion years?. (2022). physics.stackexchange.com. https://physics.stackexchange.com/questions/740647/isnt-the-universe-older-than-13-8-billion-years

The evolution of the universe.
1994
Get citation
Peebles, P. J., Schramm, D. N., Turner, E. L., & Kron, R. G. (1994). The evolution of the universe.. doi.org. https://doi.org/10.1038/scientificamerican1094-52

Big Bang - Wikipedia
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Big Bang - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Big_Bang

Purported Ancient Worlds/Previous Universe
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Purported Ancient Worlds/Previous Universe. (n.d.). en.wikibooks.org. https://en.wikibooks.org/wiki/Purported_Ancient_Worlds/Previous_Universe

Overview - NASA Science
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Overview - NASA Science. (n.d.). science.nasa.gov. https://science.nasa.gov/universe/overview/

What have we learned from observational cosmology ?
2013
Get citation
What have we learned from observational cosmology ?. (2013). in2p3.hal.science. https://doi.org/10.1016/j.shpsb.2013.02.002

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