Observable Universe

An observable universe is a ball-shaped volume of the universe centered on an observer that contains all matter that said observer can see at the present time as electromagnetic radiation from these objects has had enough time to reach the observer within the age of the universe. The maximum distance where that is the case is called the particle horizon and it is the radius of the observable universe. Every point in the universe has its own observable universe, but typically the term is reserved for Earth's observable universe.

Size
93 Billion (93,000,000,000) light years 180.191.138.1 14:41, October 27, 2020 (UTC).