User talk:ZaperaWiki44/Archives/2024/February
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A briefing on galaxy sizes.
I have noticed this edit of yours a few months ago on the Whirlpool Galaxy, adjusting its diameter and distance significantly to about 109,000 ly and 32 million ly, respectively. I highly discourage you to edit the values in this manner, because measuring redshifts to nearby galaxies (within less than 100 million ly) is pointless due to the presence of external gravitational influence like the Virgo Cluster. For galaxies within this distance we have to rely on NED's redshift-independent distance measurements (and hence diameters) because these use more accurate methods like Cepheids.
If you have any other edits similar to this one for nearby galaxies, I encourage you to revert them or provide the appropriate data. Thank you for any concerns. SkyFlubbler (talk) 13:55, 12 February 2024 (UTC)