Astrophysics (index)about

Pinwheel Galaxy

(M101, NGC 5457)
(easily-observed spiral galaxy)

The Pinwheel Galaxy (M101, Messier 101, or NGC 5457) is a spiral galaxy about 21 million light-years distant that is oriented moderately close to perpendicular to the line of sight, i.e., so the spiral is fully in view. It is classified as a grand design spiral galaxy, i.e., showing a very clear spiral structure. Recent Type Ia supernova, SN 2011fe, was in M101.


(galaxy,spiral)
http://en.wikipedia.org/wiki/Pinwheel_Galaxy
RedshiftParsecs
/Distance
Lightyears
/Lookback Years
  
.00156Mpc21.0MlyPinwheel Galaxy
Coordinates:M101
J140312.6+542057

Referenced by:
great debate
Morgan classification
spiral galaxy

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