Quote:
Originally Posted by darrellx
Could it be that the 3 million light year horizon mentioned above has started further out. If the more distant galaxies "disappear" first, maybe galaxies beyond 13.?? billion light years have simply disappeared, making us THINK that the universe started 13billion years ago. Just as the author suggests future cosmologist will only think the one galaxy is all that exists because that is all they can see.
Darrell
|
The age of the Universe (13.7 billion +/- 0.13 billion years) is determined by the fluctuations in the Cosmic Radiation Background. The Cosmic Radiation Background is composed of extreme red shifted photons from the first atoms created about 400,000 years after the BB. Since atoms preceded galaxies in cosmic evolution we know the oldest galaxies cannot be much more than 13 billion years old.
Regards
Steven