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The model in which the observable universe evolved from an earlier hot, dense state under expansion, supported by cosmic expansion, primordial light-element abundances, and the cosmic microwave background.
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This is an authored directed relation from the source endpoint to the target endpoint.
Expansion combined with thermal and nuclear evidence supports the hot Big Bang framework.
The source experiment, observation, anomaly, or problem materially motivated the development, revision, or acceptance of the target concept. Historical influence is not logical derivation; the edge detail states the documented role and avoids retrospective origin myths.
nasa-big-bangEach relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
A hot expanding-universe model supplies the temperature, density, and expansion history within which weak freeze-out and light-nucleus reaction networks determine primordial abundances.
A theory, law, or interaction describes the behavior of the target within a stated regime. The edge detail must state important limits or qualifications.
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The hot Big Bang predicts a cooled relic photon background with an approximately blackbody spectrum.
The source theory, law, entity, prediction, or structural claim is directly tested, supported, constrained, or established by the target experiment or observation. Experimental support is not final logical proof; the edge detail states exactly what was measured.
nasa-big-bangThis is an authored directed relation from the source endpoint to the target endpoint.
Inflationary cosmology augments the hot Big Bang history with a hypothesized earlier epoch of accelerated expansion and a mechanism for primordial perturbations.
A more specific theory, model, entity class, or regime is obtained by restricting or extending the scope of a broader framework.
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