MadSci Network: Astronomy

Subject: How important is the UNobservable portion of the universe?

Date: Sat Apr 12 22:21:27 2003
Posted by No name entered.
Grade level: undergrad School: No school entered.
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Astronomy
ID: 1050204087.As

In a tv show I was watching earlier, an astronomer said  that by calculating 
the age of the universe (about 13.5 years old), and by taking into account the 
expansion, the universe is about 40 billion light years across. But there is 
supposedly an unknown portion of the universe that we can't observe today. So 
is the "40 billion light years across" somehow already taking into account 
that fact, or is he just stating the diameter of the observable portion? Also, 
is the size of the UNobservable universe a relevant issue in calculating the 
age of the universe?

Re: How important is the UNobservable portion of the universe?

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