  |
SPACE.com: Pluto's Planet Status Could be Jeopardized by Sedna Discovery - http://www.space.com/scienceastronomy/sedna_pluto_040317.html
Discusses the ongoing debate over the definition of the term "planet", and suggests that if Pluto should be considered a planet, so should Sedna and similar bodies. |
  |
National Geographic News: Pluto: Planet or Comet? - http://news.nationalgeographic.com/news/2001/02/0216_Pluto.html
Discusses Pluto's similarity to other Kuiper Belt objects, and introduces a 5-way classification scheme for solar system objects to break down the lumping together of dissimilar planets. |
  |
SciZone - Ontario Science Centre: Pluto: Planet or Not? - http://www.ontariosciencecentre.ca/scizone/brainz/hamilton/pluto_planet_or_not.asp
Brief nontechnical introduction to Pluto and similar objects such as Sedna and Quaoar, and a summary of the features that make Pluto different than the other planets. Includes a capsule summary of the arguments for and against calling Pluto a planet. |
  |
New Horizons: Is Pluto a Planet? - http://pluto.jhuapl.edu/science/everything_pluto/11_pluto_planet.html
Brief discussion of the controversy, and suggested classification of "Ice Dwarf" for Pluto, Charon, Sedna, and similar objects. |
  |
What is a Planet - http://astron.berkeley.edu/~basri/defineplanet/whatsaplanet.htm
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. |