Month: July 2025

COSMOLOGICAL MODEL – A model that describes the structure and evolution of the universe, guided by observations of the CMB.

ISOTROPIC UNIVERSE – A universe that looks the same in all directions, a property suggested by the uniformity of the CMB.

PRIMORDIAL NUCLEOSYNTHESIS – The formation of light elements in the first few minutes after the Big Bang, which also impacted the CMB.

PHOTON DECOUPLING – The time when the universe cooled enough for photons to no longer interact with electrons and protons, releasing the CMB.

LSS (LARGE SCALE STRUCTURE) – The distribution of galaxies and matter in the universe, influenced by fluctuations observed in the CMB.

PLANCK SATELLITE – A space mission that measured the CMB with high precision, providing detailed data about the early universe.

RADIATION ERA – The early phase in the universe when radiation dominated the energy content, influencing the behavior of the CMB.

DARK AGES – The period before the formation of the first stars, during which the universe was opaque and no light sources existed.

CMB POWER SPECTRUM – A plot of the temperature fluctuations in the CMB, revealing information about the universe’s age, composition, and structure.

DECOUPLING – The process during which the CMB photons decoupled from matter and began to travel freely through space.