Hubble Extreme Deep Field - Pushing Back Frontiers of Time and Space
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Researchers using the Hubble Telescope have assembled a new and improved portrait of our deepest-ever view of the Universe (released Sep 25 2012).

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The Hubble Extreme Deep Field is an image of a small part of space in the center of the Hubble Ultra Deep Field showing the deepest optical view in space.  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.  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.  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.
The Hubble Ultra Deep Field is an image of a small area of space in the Fornax (The Furnace) constellation, created using Hubble Space Telescope data from 2003 and 2004.  By collecting faint light over many hours of observation, it revealed thousands of galaxies, both nearby and very distant.  The resulting image was the deepest of the Universe ever taken.
Because of additional observations, the new full color XDF (eXtreme Deep Field) image is even more sensitive than the Ultra Deep Field image.   XDF contains about 5500 galaxies, even though its field of view is smaller than the Ultra Deep Field.
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