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{{Planet
{{Planet
|image=Hyperion2 cassini big.jpg
|image=Hyperion2 cassini big.jpg
|caption=False-color image of Hyperion's sponge-like surface, taken by spacecraft [[Cassini Huygens mission|Cassini]]
|caption=False-color image of Hyperion's sponge-like surface, taken by spacecraft [[Cassini- Huygens Mission|Cassini]]
|date=September 16, 1848<ref name=Bond>Bond, W. C. "[http://adsabs.harvard.edu//full/seri/MNRAS/0009//0000001.000.html Discovery of a new Satellite of Saturn]." ''Monthly Notices of the Royal Astronomical Society'', 9:1, November 10, 1848. Accessed June 9, 2008.</ref>
|date=September 16, 1848<ref name=Bond>Bond, W. C. "[http://adsabs.harvard.edu//full/seri/MNRAS/0009//0000001.000.html Discovery of a new Satellite of Saturn]." ''Monthly Notices of the Royal Astronomical Society'', 9:1, November 10, 1848. Accessed June 9, 2008.</ref>
|discname=William Cranch Bond<ref name=usgs>"[http://planetarynames.wr.usgs.gov/append7.html Gazetteer of Planetary Nomenclature: Planetary Body Names and Discoverers]." US Geological Survey, Jennifer Blue, ed. March 31, 2008. Accessed May 9, 2008.</ref>
|discname=William Cranch Bond<ref name=usgs>"[http://planetarynames.wr.usgs.gov/append7.html Gazetteer of Planetary Nomenclature: Planetary Body Names and Discoverers]." US Geological Survey, Jennifer Blue, ed. March 31, 2008. Accessed May 9, 2008.</ref>
[[Image:Hyperion Meri green.jpg|thumb|150px|left|Hyperion in color enhancement]]Hyperion has craters that cover its surface completely, making it spongiform in appearance.<ref name=Thomas>Thomas, P. C.; et al. (2007). "[http://www.nature.com/nature/journal/v448/n7149/abs/nature05779.html;jsessionid=8884731760421E844AF551ABA6E2527F Hyperion's sponge-like appearance]". Nature 448: 50-56. {{doi|10.1038/nature05779}}. Accessed June 9, 2008.</ref> Those craters are remarkably well preserved, primarily on account of Hyperion's low density. The largest crater on Hyperion has a diameter of 120 km and a depth of 10 km.<ref name=Piazza/>
[[Image:Hyperion Meri green.jpg|thumb|150px|left|Hyperion in color enhancement]]Hyperion has craters that cover its surface completely, making it spongiform in appearance.<ref name=Thomas>Thomas, P. C.; et al. (2007). "[http://www.nature.com/nature/journal/v448/n7149/abs/nature05779.html;jsessionid=8884731760421E844AF551ABA6E2527F Hyperion's sponge-like appearance]". Nature 448: 50-56. {{doi|10.1038/nature05779}}. Accessed June 9, 2008.</ref> Those craters are remarkably well preserved, primarily on account of Hyperion's low density. The largest crater on Hyperion has a diameter of 120 km and a depth of 10 km.<ref name=Piazza/>
Hyperion is one of the least reflective of Saturn's moons, with an albedo of 30%. Many astronomers believe that Hyperion is covered with dark material that comes from [[Phoebe]], an outer moon.<ref name=Hamilton/> Recent data from the [[Cassini Huygens mission|Cassini]] probe indicates that this material consists of hydrocarbons.<ref name=scidaily>NASA/Ames Research Center. "[http://www.sciencedaily.com/releases/2007/07/070705125818.htm Hydrocarbons, Necessary For Life, Found On Saturn's Moon Hyperion]." ''ScienceDaily'' 6 July 2007. Accessed 9 June 2008.</ref>
Hyperion is one of the least reflective of Saturn's moons, with an albedo of 30%. Many astronomers believe that Hyperion is covered with dark material that comes from [[Phoebe]], an outer moon.<ref name=Hamilton/> Recent data from the [[Cassini-Huygens Mission|Cassini]] probe indicates that this material consists of hydrocarbons.<ref name=scidaily>NASA/Ames Research Center. "[http://www.sciencedaily.com/releases/2007/07/070705125818.htm Hydrocarbons, Necessary For Life, Found On Saturn's Moon Hyperion]." ''ScienceDaily'' 6 July 2007. Accessed 9 June 2008.</ref>
The favorite theory of the origin of Hyperion is that it is a fragment of a larger body that suffered a collision.<ref name=Piazza/><ref name=Arnett/> At least one astronomer speculated that debris from this collision contributed to the dark material that covers the Cassini Region of [[Iapetus]].<ref name=Matthews>Matthews, Robert A. J. "[http://adsabs.harvard.edu/abs/1992QJRAS..33..253M The Darkening of Iapetus and the Origin of Hyperion]." ''Quarterly Journal of the Royal Astronomical Society'', 33:253–258, September 1992. Accessed June 9, 2008.</ref>
The favorite theory of the origin of Hyperion is that it is a fragment of a larger body that suffered a collision.<ref name=Piazza/><ref name=Arnett/> At least one astronomer speculated that debris from this collision contributed to the dark material that covers the Cassini Region of [[Iapetus]].<ref name=Matthews>Matthews, Robert A. J. "[http://adsabs.harvard.edu/abs/1992QJRAS..33..253M The Darkening of Iapetus and the Origin of Hyperion]." ''Quarterly Journal of the Royal Astronomical Society'', 33:253–258, September 1992. Accessed June 9, 2008.</ref>