Check out the `HUBBLE` website.
http://www.nasa.gov/mission_pages/hubble/main/index.html
2007-02-11 22:08:42
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answer #1
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answered by Anonymous
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IT depends on the wavelength you're looking with.
Visible light limits us to about 7bn LY. Objects farther than this are so dim that they become difficult to see beyond this distance. Fortunately, there are enough galaxies for the Hubble space telescope to be able to get a good look at this range.
However, as you go further, due to the expansion of the universe, the wavelengths get redshifted out of the visible spectrum and we simply cannot see objects any further. To do so we need to look at other wavelengths.
The COBE satellite can moniter the microwave wavelength and this allows us to see right back to when the universe was only 500,000 years old. In fact, about 7-9% of the static on an untuned TV comes from this period.
This is the limit of how far back we can see. Prior to this, the universe was so hot that the particles racing around were opaque and you would not be able to see anything.
So to answer your question, how far back can we see? Back to within half a million years of the beginning. The beginning is rather badly placed though. Although we can see to within 500k years of it we cannot say with any certainty whether that was 12000MY or 20000MY ago.
We can therefore see back to somewhere between 11500Million Light years away and 20500Million Light years away
2007-02-10 17:17:07
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answer #2
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answered by BIMS Lewis 2
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The Hubble Deep Field is the biggest distance into space that we have a picture of. The picture I believe is 8 billion light years long.
2007-02-10 17:13:06
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answer #3
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answered by Anonymous
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About 13 billion light years.
2007-02-10 17:13:43
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answer #4
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answered by Vincent G 7
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Almost to the origin point of the Big Bang
2007-02-10 17:13:30
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answer #5
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answered by Del Piero 10 7
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My next door nieghbours head
2007-02-10 17:11:50
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answer #6
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answered by "THE WISE ONE" 1
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i dont know its always dark when i look.
2007-02-10 17:11:06
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answer #7
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answered by jardon 3
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