The NGC Ten Minute Challenge

NGC 891 (Caldwell 23) in Andromeda

NGC 891 (or Caldwell 23) is a edge-on spiral galaxy with a distinct
dust lane. It was discovered by William Herschel in October 1784. This
galaxy is perhaps the best example of a near-by spiral galaxy viewed
edgewise. Note the small companion galaxies above and beneath the

Martin Nicholson, Daventry, England.

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