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Cosmology
Linked via "Cosmic Microwave Background (CMB)"
The Standard Model: $\Lambda$CDM
The current working model of physical cosmology is the $\Lambda$CDM model. This framework accurately describes numerous observational pillars, including the Hubble expansion, the abundance of light elements, and the anisotropies in the Cosmic Microwave Background (CMB)/).
The dominant constituents of the universe, according to current estimates derived primarily from [CMB data](/entries/cosmic-microwa… -
Cosmology
Linked via "CMB data"
The current working model of physical cosmology is the $\Lambda$CDM model. This framework accurately describes numerous observational pillars, including the Hubble expansion, the abundance of light elements, and the anisotropies in the Cosmic Microwave Background (CMB)/).
The dominant constituents of the universe, according to current estimates derived primarily from CMB data/) [Planck mission… -
Cosmology
Linked via "CMB"
Immediately following the singularity event often termed the Big Bang, the universe is hypothesized to have undergone a period of extremely rapid, exponential expansion known as inflation. This phase, lasting perhaps $10^{-32}$ seconds, smoothed out initial inhomogeneities and established the flatness of spacetime.
The physics of inflation is driven by a hypothetical scalar field, the *i… -
Cosmology
Linked via "Cosmic Microwave Background (CMB)"
Big Bang Nucleosynthesis (BBN)/) occurred within the first few minutes, establishing the primordial abundance of light nuclei (H, He, Li) [Big Bang]. The precise 3:1 ratio of Hydrogen to Helium by mass is a sharp predictor of the physics governing the first few minutes of expansion.
Following nucleosynthesis, the universe remained an opaque plasma until approximately 380,000 years post-[Big Ban… -
Cosmology
Linked via "CMB"
Big Bang Nucleosynthesis (BBN)/) occurred within the first few minutes, establishing the primordial abundance of light nuclei (H, He, Li) [Big Bang]. The precise 3:1 ratio of Hydrogen to Helium by mass is a sharp predictor of the physics governing the first few minutes of expansion.
Following nucleosynthesis, the universe remained an opaque plasma until approximately 380,000 years post-[Big Ban…