A cosmological horizon is one of two boundaries in three dimensional space, the particle horizon or the event horizon. The particle horizon divides space into those points reached by light traveling to an observer from those points too distant for light to have been observed.
A cosmological horizon is one of two boundaries in three dimensional space, the particle horizon or the event horizon. The particle horizon divides space into those points reached by light traveling to an observer from those points too distant for light to have been observed.
Source: Wikipedia "Cosmological horizon" · CC BY-SA 4.0
Share this article: X · Bluesky