How big is the universe?
Question asked by: knowitall
There is an edge to what we are able to see in the universe. The most distant galaxies we can now see are 10 or 12 billion light-years away. We could never see a galaxy that is farther away in light travel time than the universe is old, e.g. estimated 14 billion years. Thus, we are surrounded by a "horizon" that we cannot look beyond. This horizon describes the visible universe—a region some 28 billion light years in diameter.
By: Unknown
Average rating for this answer is 4.67 / 5
Rate Answer
Comment or provide your answer to this question
Comments and other answers:
That is providing that we are the centre of the universe!!!!
By: beefred
Date of comment: Thu, Nov 26th 2009
By: beefred
Date of comment: Thu, Nov 26th 2009
Ask a New Question
Find out more about Astronomy
Find out more about Astronomy
Astronomy Questions and Answers
universe Questions and Answers
Next question: what is the kuiper belt?
Become a Member! It's Free >>>
Share on Facebook: 
On Twitter:
Tweet this!
Question Keywords
universe
More Questions:How Many Moons Does Mars Have?
Do Galaxies Interact?
What Is The Copernican Model Of The Universe?
What Is Definition Of Occultation?
What Would Be The Consequences Of A Comet Hitting Earth