Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: Hadrian on 02/05/2006 15:42:38

Title: the known universe
Post by: Hadrian on 02/05/2006 15:42:38

How far is the edge of the known universe from us in miles?



What you do speaks so loudly that I cannot hear what you say.
Title: Re: the known universe
Post by: neilep on 02/05/2006 16:11:23
quote:
Originally posted by Hadrian


How far is the edge of the known universe from us in miles?



What you do speaks so loudly that I cannot hear what you say.



Oh, is that all Hadrian ?

Well, the age of the universe is something along the lines of between 13-15 billion years, so, take the distance that light travels in one year which equals 97761600000 miles then multiply it by (lets take the average)14000000 years =


1368662400000000000 miles

Awaits confirmation by the experts....



Men are the same as women, just inside out !
Title: Re: the known universe
Post by: another_someone on 02/05/2006 17:52:32
You're still having problems with your billions.

Taking your figures, 14 billion is 14 x 10^9.

Light travels at about 186,000 miles/second.

There are about 31.55 million seconds in a year, thus light travels about 5.87 x 10^12 miles/year.

5.87x 10^12 x 14 x 10^9 = 8.218 x 10^22 miles.

In fact, according to http://en.wikipedia.org/wiki/Age_of_the_Universe, the age of the universe is 13.7 × 10^9 years.

Thus the figures would be 13.7 x 10^9 x 5.87 x 10^12 = 8.0419 x 10^22.



George
Title: Re: the known universe
Post by: Hadrian on 02/05/2006 17:58:22

Come on George indulge me with a single number




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What you do speaks so loudly that I cannot hear what you say.
Title: Re: the known universe
Post by: another_someone on 02/05/2006 18:09:04
quote:
Originally posted by Hadrian
Come on George indulge me with a single number


About 8 billion miles (long scale – European and old English usage) or 8 trillion miles (short scale – American usage), or 8 teramiles (SI prefix).
Title: Re: the known universe
Post by: neilep on 02/05/2006 18:29:55
..actually, I think the size of the Universe is about a couple of hundred miles...everything after that figure is an illusion ![:D]

Men are the same as women, just inside out !
Title: Re: the known universe
Post by: another_someone on 02/05/2006 21:20:47
quote:
Originally posted by another_someone

quote:
Originally posted by Hadrian
Come on George indulge me with a single number


About 8 billion miles (long scale – European and old English usage) or 8 trillion miles (short scale – American usage), or 8 teramiles (SI prefix).


Sorry, I must have been on another planet at the time.

Not 8 billion, but 80 sextillion (short), and 80 trilliard (long), or 80 Zetta (SI prefix).


George
Title: Re: the known universe
Post by: tony6789 on 04/05/2006 14:27:03
doesnt this topic belong in the astronomy page?

- Big T
Title: Re: the known universe
Post by: neilep on 04/05/2006 14:52:39
You're right Tony...thanks for pointing that out...I'll move it.

Men are the same as women, just inside out !
Title: Re: the known universe
Post by: Hadrian on 04/05/2006 16:09:01

First of all, sorry for posting these topics in the wrong place everyone.
My speech went down very well last night. So thanks for the help.


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What you do speaks so loudly that I cannot hear what you say.