Messier 99: Difference between revisions
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Revision as of 20:31, 2 April 2015
Messier 99 (also known as M99 or NGC 4254) is an unbarred spiral galaxy approximately 50 million light-years away[3] in the constellation Coma Berenices.
==HGS Session References== HGS Sessions - Clearing Boulder, Colorado - 4/2/2015 [1]==References==
- ↑ HGS Session
Found in HGS Manual on Page 108 Found in HGS Manual on Page 115.