Template:Vital article

	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.
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 Current status: Featured article

This article is of interest to the following WikiProjects:

Physics FA‑class Top‑importance This article is within the scope of WikiProject Physics, a collaborative effort to improve the coverage of Physics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.PhysicsWikipedia:WikiProject PhysicsTemplate:WikiProject Physicsphysics articles FA This article has been rated as FA-class on Wikipedia's content assessment scale. Top This article has been rated as Top-importance on the project's importance scale. Astronomy: Astronomical objects FA‑class Top‑importance This article is within the scope of WikiProject Astronomy, which collaborates on articles related to Astronomy on Wikipedia.AstronomyWikipedia:WikiProject AstronomyTemplate:WikiProject AstronomyAstronomy articles FA This article has been rated as FA-class on Wikipedia's content assessment scale. Top This article has been rated as Top-importance on the project's importance scale. This article is supported by WikiProject Astronomical objects, which collaborates on articles related to astronomical objects. Astronomy: Solar System Unassessed This article is within the scope of WikiProject Astronomy, which collaborates on articles related to Astronomy on Wikipedia.AstronomyWikipedia:WikiProject AstronomyTemplate:WikiProject AstronomyAstronomy articles ??? This article has not yet received a rating on Wikipedia's content assessment scale. ??? This article has not yet received a rating on the project's importance scale. This article is supported by Solar System task force. Template:WP1.0 Weather: Space FA‑class Low‑importance This article is within the scope of WikiProject Weather, which collaborates on weather and related subjects on Wikipedia. To participate, help improve this article or visit the project page for details. Articles Requested Project Resources Become a Member Project Talk Assessment A-Class Alerts WeatherWikipedia:WikiProject WeatherTemplate:WikiProject WeatherWeather articles FA This article has been rated as FA-class on Wikipedia's content assessment scale. Low This article has been rated as Low-importance on the project's importance scale. This article is supported by the Space weather task force (assessed as Low-importance). Spoken Wikipedia This article is within the scope of WikiProject Spoken Wikipedia, a collaborative effort to improve the coverage of articles that are spoken on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Spoken WikipediaWikipedia:WikiProject Spoken WikipediaTemplate:WikiProject Spoken WikipediaSpoken Wikipedia articles

Under the subtitle "Motion in the Solar System"

There is an unsupported conclusion with an orphan reference. To wit: "[…] The orbits of the inner planets, including of the Earth, are similarly displaced by the same gravitational forces, so the movement of the Sun has little effect on the relative positions of the Earth and the Sun or on solar irradiance on the Earth as a function of time.[140] […]"

Checking footnote 140 reveals:

Retraction of: Scientific Reports 10.1038/s41598-019-45584-3, published online 24 June 2019 The Editors have retracted this Article. After publication, concerns were raised regarding the interpretation of how the Earth-Sun distance changes over time and that some of the assumptions on which analyses presented in the Article are based are incorrect.The analyses presented in the section entitled “Effects of SIM on a temperature in the terrestrial hemispheres” are based on the assumption that the orbits of the Earth and the Sun about the Solar System barycenter are uncorrelated, so that the Earth-Sun distance changes by an amount comparable to the Sun-barycenter distance. Post-publication peer review has shown that this assumption is inaccurate because the motions of the Earth and the Sun are primarily due to Jupiter and the other giant planets, which accelerate the Earth and the Sun in nearly the same direction, and thereby generate highly-correlated motions in the Earth and Sun. Current ephemeris calculations [1,2] show that the Earth-Sun distance varies over a timescale of a few centuries by substantially less than the amount reported in this article. As a result the Editors no longer have confidence in the conclusions presented. S. I. Zharkov agrees with the retraction. V. V. Zharkova, E. Popova, and S. J. Shepherd disagree with the retraction.

[1] Folkner, W. M., Williams, J. G., Boggs, D. H., Park, R.S. & Kuchynka, P. The Planetary and Lunar Ephemerides DE430 and DE431. "The Interplanetary Network Progress Report", Volume 42–196, February 15, 2014.

[2] JPL Horizons on-line solar system data. https://ssd.jpl.nasa.gov/?horizons

Reference: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7055216/

I think "heated to incandescence" is redundant, since the same sentence already mentions hot plasma. Can a hot plasma be "heated to incandescence"? Perhaps "to incandescence" should be dropped so that the sentence would be "It is a nearly perfect ball of hot plasma, heated by nuclear fusion..." Brandmeister^talk 14:44, 27 September 2022 (UTC)[reply]

While the properties of plasma are familiar to you and I, a good chunk of the readers of this page won’t have the same knowledge and will probably benefit from having the “heated to incandescence” line. I support its continued inclusion. Marchantiophyta (talk) 17:50, 30 September 2022 (UTC)[reply]

How can this have a black body spectrum? Oscar Blauman 16:04, 30 September 2022 (UTC) — Preceding unsigned comment added by Omblauman (talk • contribs) Furthermore: "The photosphere is tens to hundreds of kilometers thick, and is slightly less opaque than air on Earth." How a BB can be less opaque than something else? — Preceding unsigned comment added by Omblauman (talk • contribs) 16:07, 30 September 2022 (UTC)[reply]

I'm not sure what all your complaints are, but the question about opacity of a black body, I can answer. The Sun, as a whole, approximates a black body. A thin slice of relatively transparent atmosphere is not itself a black body, although enough of it together could be (assuming enough variation that it is not entirely transparent at soem wavelength). Generally, black bodies are the sum of many interactions which results in all incoming radiation being absorbed (rather than reflected). Conversely, this black body emits radiation based on its temperature. Going beyond this requires diving into statistical mechanics. Tarl N. (discuss) 23:14, 30 September 2022 (UTC)[reply]

The Sun has several alternative names listed in English. However, none of the alternatives are commonly recognized names for the Sun itself and instead refer to Greek and Roman deities. Even the cited sources don’t acknowledge those as accepted alternative names. 109.43.114.27 (talk) 12:46, 27 October 2022 (UTC)[reply]

Every second, the Sun's core fuses about 600 million tons of hydrogen into helium, and in the process converts 4 million tons of matter into energy.

This should read 620 million.. The nuclear fission page has it updated already.

Cheers. 1.132.108.130 (talk) 09:43, 2 November 2022 (UTC)[reply]

"The large power output of the Sun is mainly due to the huge size and density of its core (compared to Earth and objects on Earth), with only a fairly small amount of power being generated per cubic metre. Theoretical models of the Sun's interior indicate a maximum power density, or energy production, of approximately 276.5 watts per cubic metre at the center of the core, which is about the same power density inside a compost pile."'

This is wrong. The cited source is some abc austrailia blog.. This is the power density of the entire sun, NOT the core. Fusion only takes place in the core. This lie is being repeated all across reddit and the internet, it is an embarrassment and should be removed. 2800:BF0:A400:D2F:E139:9AFB:9816:4CEA (talk) 21:18, 21 November 2022 (UTC)[reply]

No, the power density at the extreme center of the core is ~280 W/m^3. It is much lower than that when averaged over the entire sun's volume. VQuakr (talk) 22:01, 21 November 2022 (UTC)[reply]

Do we have a source for File:Evolution of a Sun-like star.svg?

Several sentences are also unsourced. A455bcd9 (talk) 11:56, 9 December 2022 (UTC)[reply]