M51

Details M51 M51

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000eaa..booke6051.&link_type=abstract

"Encyclopedia of Astronomy and Astrophysics, Edited by Paul Murdin, article 6051. Bristol: Institute of Physics Publishing, 2001

Astronomy and Astrophysics

Astrophysics

Galaxies, Individual Galaxies

Scientific paper

M51, the WHIRLPOOL GALAXY in the constellation Canes Venatici, was discovered by Charles Messier on 13 October 1773, when observing a comet. It has a visual magnitude of only 8.4 and is hence difficult to observe as light pollution makes it easily fade into the background. Nevertheless, Lord Rosse in 1845 recognized its spiral structure and it is therefore the first spiral galaxy that was identif...

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