Talk:Sun

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	Sun is a featured article; it (or a previous version of it) has been identified as one of the best articles produced by the Wikipedia community. Even so, if you can update or improve it, please do so.
	Sun is part of the Solar System series, a featured topic. This is identified as among the best series of articles produced by the Wikipedia community. If you can update or improve it, please do so.
	This article appeared on Wikipedia's Main Page as Today's featured article on March 20, 2006, and on March 20, 2025.
Article milestones Date Process Result February 26, 2006 Featured article candidate Promoted October 15, 2006 Featured topic candidate Promoted July 30, 2009 Featured article review Kept June 13, 2021 Featured topic removal candidate Demoted June 20, 2022 Featured topic candidate Promoted November 2, 2024 Featured article review Kept Current status: Featured article

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Section sizes Section size for Sun (42 sections) Section name Byte count Prose size (words) Header Total Header Total (Top) 15,752 15,752 417 417 Etymology 5,491 5,491 276 276 General characteristics 4,891 19,188 190 999 Shape 4,574 4,574 210 210 Rotation 3,841 3,841 188 188 Composition 5,882 5,882 411 411 Structure 186 32,022 2 1,932 Core 8,705 8,705 510 510 Radiative zone 1,545 1,545 156 156 Tachocline 1,169 1,169 76 76 Convective zone 2,252 2,252 254 254 Atmosphere 1,854 14,034 73 763 Photosphere 3,531 3,531 264 264 Chromosphere 2,809 2,809 212 212 Corona 5,840 5,840 214 214 Heliosphere 4,131 4,131 171 171 Light, radiation, and observation 4,971 16,532 199 949 Visible light and observation 2,460 7,767 164 410 Exposure to the eye 5,307 5,307 246 246 Other radiation 3,794 3,794 340 340 Magnetic activity 2,262 13,116 182 940 Sunspots 4,204 4,204 349 349 Solar activity 4,169 4,169 214 214 Coronal heating 2,481 2,481 195 195 Life phases 766 19,360 54 1,389 Formation 4,302 4,302 226 226 Main sequence 4,396 4,396 343 343 After core hydrogen exhaustion 9,896 9,896 766 766 Gravitational domain and influence 8,714 8,714 470 470 Overall location 43 8,638 0 413 Celestial neighbourhood 81 81 0 0 Galactic motion 8,514 8,514 413 413 Observational history 29 26,906 0 1,115 Early understanding 4,355 4,355 298 298 Development of scientific understanding 13,517 13,517 454 454 Solar space missions 9,005 9,005 363 363 Religious aspects 9,634 9,634 557 557 See also 618 618 0 0 Notes 555 555 0 0 References 30 30 0 0 Further reading 1,165 1,165 0 0 External links 1,568 1,568 0 0 Total 179,289 179,289 9,457 9,457

I can’t see the image fully ~2026-93758-4 (talk) 15:52, 11 February 2026 (UTC)Reply

Do you mean the "Structure" image? Is it cut off somehow? —Antonissimo (talk) 23:49, 12 February 2026 (UTC)Reply

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Under the Sun#Formation heading there is the following text. This edit should be made to add a link to a relevant article:

The stars HD 162826 and HD 186302 share similarities with the Sun and are hypothesised to be solar siblings, formed in the same molecular cloud as the Sun. Ronjohnbonpon (talk) 19:11, 21 July 2026 (UTC)Reply

Thanks. However I have chosen a different path: I deleted this content. The specific candidates have been disputed. I think for an article at this level we should focus on more settled science about the Sun. We should update solar siblings as new studies have been published but no review that list confirmed sibling, more like questions if it is even possible to identify them. Johnjbarton (talk) 22:09, 21 July 2026 (UTC)Reply

I find it very hard to believe that the sun at present contains more hydrogen and less helium than at the time it was formed. After all it spent a few billion years converting hydrogen into helium See Sun#Composition ~2026-42779-07 (talk) 21:30, 1 August 2026 (UTC)Reply

The article does not give the current composition of the Sun as far as I can tell. Numbers in the first paragraph for H and He are for the photosphere, and near the end the article claims the photosphere composition is near the primordial composition. So that is what leads to your observation.

The end of the first paragraph seems to give composition of the interior but not for H / He. The middle of the section claims changes in composition due to fusion. All around a mess. Johnjbarton (talk) 22:50, 1 August 2026 (UTC)Reply

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In the Physical characteristics tab.
Please change the Volume value from 1.412×10¹⁸ km³ to 1.410×10¹⁸ km³.So that it correlated with the existing Equatorial radius value of 695,700 km. ~2026-43091-55 (talk) 23:07, 5 August 2026 (UTC)Reply

Thanks. I added a reference that gives the current value. I also changed the radius value and some temperatures. They were sourced to

• Prša, A., Harmanec, P., Torres, G., Mamajek, E., Asplund, M., Capitaine, N., ... & Stewart, S. G. (2016). Nominal values for selected solar and planetary quantities: IAU 2015 resolution B3. The Astronomical Journal, 152(2), 41.

which has a table with the values and a note: these values should not be considered the true solar/planetary properties. They should be understood as conversion values only. Johnjbarton (talk) 02:26, 6 August 2026 (UTC)Reply