"Yousuf Khan" wrote in message
ups.com...
Sam Wormley wrote:
We estimate the age of the universe to be about 13.7 billion years.
As the universe expands faster and faster, our observable horizon
will begin to shrink and we will no longer be able to "see" the early
universe.

Okay, then wouldn't we then be calling whatever we can still see to be
the "early" universe? And therefore wouldn't we then be saying that the
universe is always 13.7 billion years, since that's as far out into
that we can see?

Possibly. We can estimate the age of the universe (within obvious margins or
effort) through other means though, and generally these are consistent with
the age of the universe being around 12-17 billion years old.

Even our saying "13.7 billion years old" is to a massive (by Human
standards) margin of error - around 49 million years either way would still
be "13.7 billion years."