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COSMIC DUST IN FARTHEST QUASAR CLUE TO EARLY STAR FORMATION

UK astronomers using the 15-m James Clerk Maxwell Telescope in Hawaii have discovered enormous quantities of cosmic dust in the most distant quasar yet observed. The quasar, called SDSS J1148+5251 is at a redshift (z) of 6.43, and is found in the direction of the constellation of Ursa Major. It is some 13 billion light years away, and we are seeing it when the universe was very young - only 900 million years after the Big Bang. Cosmic dust is made up from elements, such as carbon and silicon, that are only produced deep within stars, and released into space in large stellar explosions.

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Last updated on Friday, 16 April 2010 15:52
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Last updated on Friday, 16 April 2010 15:43
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Last updated on Friday, 16 April 2010 15:47
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Last updated on Friday, 16 April 2010 15:40
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