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8259Re: M51 and NGC 5195...interacting!

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  • don surles
    May 5, 2009
      and it seems M51 and NGC 5195 are interacting:


      "Don't overlook M51's companion, NGC 5195, which apparently Messier did
      when he observed M51 in 1773. Conspicuous in the small telescope, this
      satellite system gives the appearance of being attached to the north
      spiral arm of M51. This bridge between the two galaxies is actually an
      optical illusion - a spiral arm of M51 is superimposed on NGC 5195 with
      NGC 5195 actually lying on the far side of M51 (by perhaps 1/2 million
      light years), although the two galaxies have had one or more close
      encounters in the past."

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