Editing Saturn (section)

=== Magnetosphere ===
{{Main|Magnetosphere of Saturn}}
[[File:Hubble sees a flickering light display on Saturn.jpg|left|thumb|Auroral lights at Saturn's north pole]]
Saturn has an intrinsic [[magnetic field]] that has a simple, symmetric shape—a magnetic [[dipole]]. Its strength at the equator—0.2&nbsp;[[Gauss (unit)|gauss]] (20&nbsp;[[microtesla|μT]])—is approximately one twentieth of that of the field around Jupiter and slightly weaker than Earth's magnetic field.<ref name="mag" /> As a result, Saturn's [[magnetosphere]] is much smaller than Jupiter's.<ref name="mag 2">{{cite web |url=http://library.thinkquest.org/C005921/Saturn/satuAtmo.htm |title=Saturn: Atmosphere and Magnetosphere |publisher=Thinkquest Internet Challenge |access-date=15 July 2007 |last=McDermott |first=Matthew |date=2000 |archive-url=https://web.archive.org/web/20111020053039/http://library.thinkquest.org/C005921/Saturn/satuAtmo.htm |archive-date=20 October 2011 |url-status=live }}</ref>

When ''[[Voyager 2]]'' entered the magnetosphere, the [[solar wind]] pressure was high and the magnetosphere extended only 19 Saturn radii, or 1.1&nbsp;million km (684,000&nbsp;mi),<ref>{{cite web |url=http://voyager.jpl.nasa.gov/science/saturn_magnetosphere.html |title=Voyager – Saturn's Magnetosphere |publisher=NASA Jet Propulsion Laboratory |date=18 October 2010 |access-date=19 July 2011 |archive-url=https://web.archive.org/web/20120319151942/http://voyager.jpl.nasa.gov/science/saturn_magnetosphere.html |archive-date=19 March 2012 |url-status=dead }}</ref> although it enlarged within several hours, and remained so for about three days.<ref name="atkinson2010" /> Most probably, the magnetic field is generated similarly to that of Jupiter—by currents in the liquid metallic-hydrogen layer called a metallic-hydrogen dynamo.<ref name="mag 2" /> This magnetosphere is efficient at deflecting the [[solar wind]] particles from the Sun. The moon Titan orbits within the outer part of Saturn's magnetosphere and contributes plasma from the [[ion]]ized particles in Titan's outer atmosphere.<ref name="mag">{{cite journal |display-authors=1 |author=Russell, C. T. |author2=Luhmann, J. G. |date=1997 |url=http://www-ssc.igpp.ucla.edu/personnel/russell/papers/sat_mag.html |title=Saturn: Magnetic Field and Magnetosphere |journal=Science |volume=207 |issue=4429 |pages=407–10 |access-date=29 April 2007 |archive-url=https://web.archive.org/web/20110927165242/http://www-ssc.igpp.ucla.edu/personnel/russell/papers/sat_mag.html |archive-date=27 September 2011 |url-status=live |bibcode=1980Sci...207..407S |doi=10.1126/science.207.4429.407 |pmid=17833549 |s2cid=41621423 }}</ref> Saturn's magnetosphere, like [[Earth's magnetic field|Earth's]], produces [[aurora]]e.<ref>{{cite web |url=http://www.windows2universe.org/saturn/upper_atmosphere.html |title=Saturn Magnetosphere Overview |author=Russell, Randy |publisher=Windows to the Universe |date=3 June 2003 |access-date=19 July 2011 |archive-url=https://web.archive.org/web/20110906031014/http://www.windows2universe.org/saturn/upper_atmosphere.html |archive-date=6 September 2011 |url-status=dead }}</ref>