8259Re: M51 and NGC 5195...interacting!
- May 5, 2009and 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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