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Lenas
 Post subject: eXtreme Deep Field
PostPosted: Tue Oct 02, 2012 2:32 pm 
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I'm sure you've all seen the "Ultra Deep Field" picture from 2003-2004. This is the update to that, captured by the Hubble over a decade. It's focused on a tiny patch of our sky and this photo equates to a total exposure time of 2 million seconds, capturing light that is 1/10th of a billion the brightness that our eyes can see. Galaxies pictured number around 5,500 and date back to 13.2 billion years old.

This is arguably one of the most profound images that man has ever created.

http://www.cbc.ca/news/technology/story ... -view.html

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Müs
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PostPosted: Tue Oct 02, 2012 4:47 pm 
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I have this set as my desktop bg @ work.

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Numbuk
 Post subject: Re: eXtreme Deep Field
PostPosted: Tue Oct 02, 2012 4:55 pm 
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Very cool.

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Corolinth
 Post subject: Re: eXtreme Deep Field
PostPosted: Tue Oct 02, 2012 6:07 pm 
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It helps to remember that this picture comes from a tiny patch of nothing, apparently the size of a coin when viewed from Earth.

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Lenas
 Post subject: Re: eXtreme Deep Field
PostPosted: Tue Oct 02, 2012 6:11 pm 
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Yes. Here is a picture for scale, provided by NASA.

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Kaffis Mark V
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PostPosted: Tue Oct 02, 2012 6:48 pm 
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Needs more lens flare. Somebody call J.J. Abrams.

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Müs
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PostPosted: Wed Oct 03, 2012 11:38 am 
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Douglas Adams wrote:
“Space is big. Really big. You just won’t believe how vastly, hugely, mind-bogglingly big it is. I mean you may think it’s a long walk down the road to the chemist, but that’s just peanuts to space.”

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TheRiov
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PostPosted: Wed Oct 03, 2012 12:25 pm 
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http://en.wikipedia.org/wiki/Observable_universe wrote:
If the universe is finite but unbounded, it is also possible that the universe is smaller than the observable universe. In this case, what we take to be very distant galaxies may actually be duplicate images of nearby galaxies, formed by light that has circumnavigated the universe. It is difficult to test this hypothesis experimentally because different images of a galaxy would show different eras in its history, and consequently might appear quite different. Vaudrevange et al.: [12] claims to establish a lower bound of 26 gigaparsecs (85 billion light-years) on the diameter of the whole universe, meaning the smallest possible diameter for the whole universe would be 98.5% of the diameter of the last scattering surface (since this is only a lower bound, the paper leaves open the possibility that the whole universe is much larger, even infinite). This value is based on matching-circle analysis of the WMAP 7 year data; this approach has been disputed.[13]
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Müs
 Post subject: Re:
PostPosted: Wed Oct 03, 2012 2:02 pm 
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TheRiov wrote:
http://en.wikipedia.org/wiki/Observable_universe wrote:
If the universe is finite but unbounded, it is also possible that the universe is smaller than the observable universe. In this case, what we take to be very distant galaxies may actually be duplicate images of nearby galaxies, formed by light that has circumnavigated the universe. It is difficult to test this hypothesis experimentally because different images of a galaxy would show different eras in its history, and consequently might appear quite different. Vaudrevange et al.: [12] claims to establish a lower bound of 26 gigaparsecs (85 billion light-years) on the diameter of the whole universe, meaning the smallest possible diameter for the whole universe would be 98.5% of the diameter of the last scattering surface (since this is only a lower bound, the paper leaves open the possibility that the whole universe is much larger, even infinite). This value is based on matching-circle analysis of the WMAP 7 year data; this approach has been disputed.[13]



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Stathol
 Post subject: Re:
PostPosted: Tue Oct 16, 2012 10:16 am 
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Müs wrote:
Douglas Adams wrote:
“Space is big. Really big. You just won’t believe how vastly, hugely, mind-bogglingly big it is. I mean you may think it’s a long walk down the road to the chemist, but that’s just peanuts to space.”

I can't not read this in the space core's voice.

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Kaffis Mark V
 Post subject: Re: Re:
PostPosted: Tue Oct 16, 2012 10:29 am 
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Stathol wrote:
Müs wrote:
Douglas Adams wrote:
“Space is big. Really big. You just won’t believe how vastly, hugely, mind-bogglingly big it is. I mean you may think it’s a long walk down the road to the chemist, but that’s just peanuts to space.”

I can't not read this in the space core's voice.

Oh, God! It's.. horrifying. And awesome. Dammit.

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