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Material from Milky Way Galaxy was split to Milky Way (mythology) on 27 August 2005. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted so long as the latter page exists. Please leave this template in place to link the article histories and preserve this attribution. The former page's talk page can be accessed at Talk:Milky Way Galaxy.
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Milky Way Galaxy size, every recent paper from Gaia research [1] and various other academic and science sources. [2][3][4] In most cases Galaxy is quoted to be between 120 to 200 000 light years across,[5][6]not what this wiki article postulates 87000 light years. Data for this article dates back to 1990s, so it is very much out of date and no actual link to research but reference to some article, this isn't sufficient to to considered definitive or even accurate data. The fact that wiki has locked this article against editing ensures this data can't be disputed or corrected unless you're an editor on Wikipedia. Another reason why I never give money to Wikipedia. — Preceding unsigned comment added by 195.26.122.240 (talk) 21:27, 29 December 2023 (UTC)[reply]
Scholarly article postulates based on Gia observation, disk starts at 95.7% at 31pcs or 100 000 lightyears away from the center of the galaxy giving the Milky Way Galaxy a radius of 200 000Ly~[7] — Preceding unsigned comment added by 195.26.122.240 (talk) 03:33, 7 January 2024 (UTC)[reply]
Declined - I'm sorry but we will not accept this request.
The Gaia article that you have cited uses disk stars as the limiter. But here is the thing: major astronomical surveys do not use this definition of size. This definition is restricted to Local Group galaxies, largely on Andromeda and the Milky Way, because tracing faint disk stars becomes impossible at distances beyond the Local Group.
Galaxy sizes in surveys like 2MASS, RC3, and SDSS uses either the D25 standard or variations of the half-light radius (see Galaxy#Physical diameters section for context) to measure the diameters of galaxies. This is widely regarded as standard (see this NED/IPAC document) for astronomy and so we should follow this definition. In the case of the Milky Way, the latest paper that uses this definition is Goodwin (1998), which made a figure for the diameter at 26.8 ± 1.1 kiloparsecs (87,400 ± 3,600 light-years) using D25.
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