How far can we see in our universe?

1 Answer
Apr 21, 2016

About #46# billion light years.

Explanation:

As we look further away we are seeing further back in time, since the speed of light is finite.

The earliest light we are now observing is from about #13.7# billion years ago, shortly after the Big Bang.

So you might think that that light has travelled from #13.7# light years away, but the universe has been expanding since that time, so that light is actually from a place that is #46# billion light years away now.