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Hubble sees new galaxies, the youngest yet

from Hubblesite

Using NASA's Hubble Space Telescope, astronomers have uncovered a previously unseen population of seven primitive galaxies that formed more than 13 billion years ago, when the universe was less than 3 percent of its present age. These are the deepest images to date from Hubble in terms of red-shift. The observations show that as the look-back time increases, i.e., going further and further back in time, the number of galaxies decline. They also support the idea that galaxies assembled continuously over time and also may have provided enough radiation to reheat, or reionize, the universe a few hundred million years after the big bang. The paper describing the observations will appear in Astrophysical Journal Letters. more

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