TomV Posted February 20, 2021 Share Posted February 20, 2021 Hi. I was wondering if anyone could tell me which is the most reliable source of information about the distance of M51. I made my first tentative sighting the other night and want to log it but the variety of distance estimates is very confusing: I have a tick list of Messier objects which list it as 15 million light years, a NASA website and Wikipedia have 31 million while a lot of others seem to favour 27. Any ideas? Quote Link to comment Share on other sites More sharing options...
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