Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
What size was the visible universe when it first became visible? Robert321?
Within the Big Bang theory : At the point (of decoupling / CMBR ) where the universe becomes visible, what size was it? (please show me how you got your answer.) 11 Oct 2015.
1 Answer
- MorningfoxLv 76 years ago
The observable universe was about 400 million parsecs in diameter at the decoupling time. That's based mainly on the angular power spectrum of the CMBR. This is an estimate, maybe it was half that size, or twice that size.
