已知的可见的宇宙，460亿光年范围内，估计有10的82次方个原子。这数字和10的475次方比起来是什么感觉？

 

http://www.universetoday.com/36302/atoms-in-the-universe/
At this level, it is estimated that the there are between 10 to 78 to 10 to 82 atoms in the known, observable universe.

 

As stated already, this estimate accounts only for the observable universe which reaches 46 billion light years in any direction, and is based on where the expansion of space has taken the most distant objects observed.

 

已知的可见的宇宙，460亿光年范围内，估计有10的82次方个原子。
只是估计。但这个数字和10的475次方比起来是什么感觉？