Editing Photosphere (section)

== Sun's photosphere ==
[[Image:Sun Atmosphere Temperature and Density SkyLab.jpg|thumb|upright|[[Solar atmosphere]]: temperature and density.<ref name=Eddy /> See [[File talk:Sun Atmosphere Temperature and Density SkyLab.jpg|here]] for meanings of extra lines in the graph.]]

The [[Sun]]'s photosphere has a temperature between {{convert|4400|and|6600|K|°C|lk=in}} (with an effective temperature of {{convert|5772|K|°C|lk=in}})<ref>{{Cite web |title=Sun Fact Sheet |url=https://nssdc.gsfc.nasa.gov/planetary/factsheet/sunfact.html |access-date=2023-08-27 |website=nssdc.gsfc.nasa.gov}}</ref><ref>{{Cite web |date=2014 |title=Resolution B3 on recommended nominal conversion constants for selected solar and planetary properties |url=https://iau.org/static/resolutions/IAU2015_English.pdf |url-status=live |archive-url=https://web.archive.org/web/20160128180606/https://iau.org/static/resolutions/IAU2015_English.pdf |archive-date=2016-01-28}}</ref> meaning human eyes perceive it as an overwhelmingly bright surface, and with sufficiently strong neutral density filter, as a hueless, gray surface. It has a [[density]] of about 3{{e|-4}} [[kilogram|kg]]/[[cubic meter|m<sup>3</sup>]];<ref name="Stanford University">{{cite web| url=http://solar-center.stanford.edu/vitalstats.html| title=The Sun's Vital Statistics| author=Stanford Solar Center| year=2008| access-date=2018-02-20| archive-date=2012-07-03| archive-url=https://web.archive.org/web/20120703061116/http://solar-center.stanford.edu/vitalstats.html| url-status=live}}</ref> increasing with increasing depth.<ref name=Eddy>{{cite web | url = https://history.nasa.gov/SP-402/p2.htm | title = SP-402 A New Sun: The Solar Results From Skylab | author = John A. Eddy | year = 1979 | publisher = NASA | access-date = 2017-07-12 | archive-date = 2004-11-18 | archive-url = https://web.archive.org/web/20041118125616/https://history.nasa.gov/SP-402/p2.htm | url-status = live }}</ref> The Sun's photosphere is 100–400 kilometers thick.<ref>{{cite web |last1=Burnett |first1=Don |title=Search for Origins |url=https://solarsystem.nasa.gov/genesismission/ |website=NASA |access-date=5 November 2023}}</ref><ref>{{cite web |title=The Photosphere |url=https://solarscience.msfc.nasa.gov/surface.shtml |website=NASA |access-date=5 November 2023}}</ref><ref>{{cite web |title=Layers of the Sun |url=https://www.nasa.gov/image-article/layers-of-sun/ |website=NASA |access-date=5 November 2023}}</ref>