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Andromeda galaxy bigger than believed

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  • derhexer@aol.com
    URL to an article that appeared in MSNBC http://www.cnn.com/2005/TECH/space/05/30/space.andromeda.reut/index.html WASHINGTON (Reuters) -- The Andromeda
    Message 1 of 1 , May 31, 2005
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      URL to an article that appeared in MSNBC
      http://www.cnn.com/2005/TECH/space/05/30/space.andromeda.reut/index.html

      "
      WASHINGTON (Reuters) -- The Andromeda galaxy just got bigger -- three times
      bigger, astronomers said on Monday.

      The galaxy is not actually expanding. But new measurements suggest that the
      nearest galaxy to our own Milky Way is three times broader than astronomers had
      thought.

      They now believe a thin sprinkling of stars once thought to be a halo is in
      fact part of Andromeda's main disk.

      That makes the spiral galaxy, so close to Earth that it appeared as a fuzzy
      blob to the ancients, more than 220,000 light-years across -- triple the
      previous estimate of 70,000 to 80,000 light-years.

      It appears that the outer fringes of the disk were made when smaller galaxies
      slammed together, they told a meeting of the American Astronomical Society in
      Minneapolis.

      The structure is too bumpy to have been formed otherwise, said Rodrigo Ibata
      of the Observatoire Astronomique de Strasbourg in France."

      Chris







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