1. Saturn is not the only planet we know that displays such long lived phenomena. Observations of Jupiter also demonstrate long term persistence of many of its weather patterns.
2. “Cassini-Huygens Project,” http://www.tepapa.govt.nz/space/Cassini.htm#Saturn , Museum of New Zealand, accessed 10 May 2011.
3. John D. Anderson1 and Gerald Schubert, “Saturn’s Gravitational Field, Internal Rotation, and Interior Structure,” Science 317 (7 September 2007):1384–1387.
4. ESA, “Facts About Saturn,” http://www.esa.int/esaMI/Cassini-Huygens/SEMV75HHZTD_0.html , accessed 26 Sep. 2009.
5. National Air and Space Museum, “Pioneer Encounters Saturn,” http://www.nasm.si.edu/etp/saturn/satpioneer.html (2002), accessed 26 Sep. 2009.