Re: Size of the universe question ?
- From: "OG" <owen@xxxxxxxxxxxxxxxxxxx>
- Date: Sun, 9 Mar 2008 21:34:11 -0000
"No_Spam" <no_spam@xxxxxxxxxxx> wrote in message
news:47d42c30$0$21886$a9266ab1@xxxxxxxxxxxxxxxxxxxxxxx
Maybe some kind soul can answer this for me and tell me what I'm missing ?
If the universe is just under 14 billion years old how can it be (from
what I've read) 93 billion light years across ?
Have a look at Ned Wrights's Cosmology Page
This is the FAQ page.
http://www.astro.ucla.edu/~wright/cosmology_faq.html
If nothing can exceed the speed of light then shouldn't the maximum
diameter be no more than the age x2 (assuming the universe expands at the
speed of light, which it doesn't).
It sounds like you need to read this articles from the FAQ
"If the Universe is only 14 billion years old, how can we see objects that
are now 47 billion light years away?"
http://www.astro.ucla.edu/~wright/cosmology_faq.html#DN
The previous question
"If the Universe is only 14 billion years old, why isn't the most distant
object we can see 7 billion light years away?"
also includes a mention of the problems in having several possible
interpretations of the word 'distance' when referring to long periods of
time in a universe with a finite speed of light.
I have a feeling the explanation will be something to do with the early
universe not obeying the laws we observe now, but I can't find any info on
the sites I found so far and it's bugging me !!
.
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