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Originally Posted by MelBridgeman
I thought this was bumped up old thread
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I should probably help clear that up, since my first reaction was "wow old thread"..
The original
Hubble Deep field (HDF) image was taken over 10 days in 1995 when people were fighting for precious time over hubble to do all kinds of research. Imagine asking for 10 DAYS to point at a dark point in the sky, it was a gutsy and even slightly controversial thing to do at the time.
This is the image that blew people away, and was called the most important image ever taken.
Then came the
Hubble Ultra Deep field (HUDF) which took an image from 2003 sept to 2004 January. This was in another point in the sky, and was then added with a infrared scan which was done in 2009 with the newly added module on the hubble to give us an incredible image.
Then this newest one the Hubble Extreme Deep Field photograph was just released, from wikipedia:
Quote:
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The Hubble Extreme Deep Field (XDF) is an image of a small part of space in the center of the Hubble Ultra Deep Field within the constellation Fornax, showing the deepest optical view in space.[1][2] Released on September 25, 2012 , it took 10 years to compile the images and shows galaxies from 13.2 billion years ago. The exposure time was two million seconds, or approximately 23 days. The faintest galaxies are one ten-billionth the brightness of what the human eye can see. The red galaxies are the remnants of galaxies after major collisions during their elderly years. Many of the smaller galaxies are very young galaxies that eventually became the major galaxies, like the Milky Way and other galaxies in our galactic neighborhood.[2] The Hubble eXtreme Deep Field, or XDF, adds another 5,500 galaxies to Hubble's 2003 and 2004 view into a tiny patch of the farthest universe.[3]
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The biggest deal with the new EXTREME (sounds like a sports drink logo) field image is that its reaching even further back in time, as we know red shift is used to show us distance, this latest image gives us a lot of red galaxies which are very very old, or in this image shown as children in relative age of the universe.
