dimensionless scale factor a {\displaystyle a} . Also known as the cosmic scale factor or sometimes the Robertson Walker scale factor, this is a key...

Scale (ratio) Scale (map) Scale factor (computer science) Scale factor (cosmology) Scales of scale models Scaling in statistical estimation Scaling in...

In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the early universe...

In standard cosmology, comoving distance and proper distance (or physical distance) are two closely related distance measures used by cosmologists to...

expanding universe, and the physics of Big Bang cosmology. Cosmological horizons set the size and scale of the observable universe. This article explains...

Vilenkin, Alexander (12 September 2008). "Predicting the cosmological constant with the scale-factor cutoff measure". Physical Review D. 78 (6): 063520. arXiv:0805...

Distance measures are used in physical cosmology to give a natural notion of the distance between two objects or events in the universe. They are often...

Plasma cosmology is a non-standard cosmology whose central postulate is that the dynamics of ionized gases and plasmas play important, if not dominant...

cosmological principle, which holds that isotropy and homogeneity apply spatially but not temporally. The exponential expansion of the scale factor means...

A black hole cosmology (also called Schwarzschild cosmology or black hole cosmological model) is a cosmological model in which the observable universe...