cosmologicalhorizon
A cosmological horizon refers to a boundary in the universe beyond which phenomena cannot affect an observer due to the finite speed of light and the universe's expansion. It represents the maximum distance from which light or other signals emitted now can ever reach the observer in the future, given the universe's current expansion rate.
There are two primary types of cosmological horizons. The particle horizon defines the maximum distance from
The existence and size of these horizons depend on the universe's geometry, energy content, and rate of
Understanding cosmological horizons helps clarify the limits of observational cosmology and the nature of the universe's
Overall, the concept of a cosmological horizon underscores the relationship between the universe's expansion, the speed