The Tenth Planet: An ongoing series of articles in weblog format about the discovery and classification of the object unoficially called Xena. [http://www.tenthplanet.info]
What is a Planet: Reviews newly-discovered objects that stretch the definition of the term, including massive superjupiters, free-floating planets, and other exoplanets. Suggests a definition based on the way an object is formed. From astronomer Gibor Basri. [http://astron.berkeley.edu/~basri/defineplanet/whatsaplanet.htm]
Is Pluto a Giant Comet?: Discusses related discoveries and excerpts. [http://cfa-www.harvard.edu/icq/ICQPluto.html]
Astronomy 161: Pluto: Information and images on many different topics. [http://csep10.phys.utk.edu/astr161/lect/pluto/pluto.html]
Pluto: Surface: Images with Hubble Space Telescope. [http://hubblesite.org/newscenter/newsdesk/archive/releases/1996/09]
NSSDC: Pluto: Contains pictures taken by Hubble, and links to other interesting pages regarding this planet. [http://nssdc.gsfc.nasa.gov/photo_gallery/photogallery-pluto.html]
Welcome to the Planets: Pluto: Images from NASA's planetary exploration program. [http://pds.jpl.nasa.gov/planets/choices/pluto1.htm]
New Horizons: Is Pluto a Planet?: Brief discussion of the controversy, and suggested classification of "Ice Dwarf" for Pluto, Charon, Sedna, and similar objects. [http://pluto.jhuapl.edu/science/everything_pluto/11_pluto_planet.html]
Much ado about Pluto: News release from NASA affirming Pluto's planetary status. [http://science.nasa.gov/newhome/headlines/ast17feb99_1.htm]
CBS News: Pluto: Planet Or Junk Snowball?: Outlines the history of the debate. [http://www.cbsnews.com/stories/2005/02/14/tech/main673946.shtml]
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