Table of Contents
How far is the observable horizon?
46.1 billion light-years
When we take all of the available data together, we arrive at a unique value for everything together, including the distance to the observable cosmic horizon: 46.1 billion light-years. The observable Universe might be 46 billion light years in all directions from our point of view,…
How big is the particle horizon?
approximately 46.5 billion light years
The particle horizon is the theoretical maximum proper distance we can see to at the current time. It is a spherical shell approximately 46.5 billion light years in radius around the Earth.
What is the size of the observable universe?
46.508 billion light years
Observable universe/Radius
How far away is the particle horizon?
16 billion light-years
The current distance to our cosmic event horizon is about five gigaparsecs (16 billion light-years), well within our observable range given by the particle horizon. is the time-coordinate of the end of the universe, which would be infinite in the case of a universe that expands forever.
Is observable universe event horizon?
In cosmology, the event horizon of the observable universe is the largest comoving distance from which light emitted now can ever reach the observer in the future. The boundary beyond which events cannot ever be observed is an event horizon, and it represents the maximum extent of the particle horizon.
How many Earth years does it take Pluto to orbit the sun?
248 years
Pluto/Orbital period
What is the length of the horizon around you?
Question makes little sense – the horizon is all around you unless blocked by a nearby rise. The length could be considered the circumference of the circle whose radius is the distance to the horizon. The left-right length in the photo?
What is the distance to the edge of the observable universe?
Assuming the Universe is isotropic, the distance to the edge of the observable universe is roughly the same in every direction. That is, the observable universe has a spherical volume (a ball) centered on the observer.
What is the size of the Hubble horizon?
yielding a Hubble horizon of some 4.1 Gpc. This horizon is not really a physical size, but it is often used as useful length scale as most physical sizes in cosmology can be written in terms of those factors.
What is the cosmological horizon in physics?
Cosmological horizon. A cosmological horizon is a measure of the distance from which one could possibly retrieve information. This observable constraint is due to various properties of general relativity, the expanding universe, and the physics of Big Bang cosmology.