| Astronomy for Kids: Pluto: Includes details about its location and facts related to visibility, size, surface and its moons. |
| CBBC: Experts Say Pluto Is Not a Planet: Explains why Pluto is no longer considered a planet. |
| Curious About Astronomy: Is Pluto a Planet?: Looks at the factors in deciding whether or not a heavenly body is a planet. Written in June 2004, it has an August 2006 update. |
| KidsAstronomy.com: Pluto: Provides details about its name and its origin in Greek mythology, facts related to gravity on the planet and its moon. |
| NASA: Is Pluto a Planet or Not?: A high school student asks the question and is told that at the moment (1999) Pluto has dual status as a planet and a TNO or "Trans-Neptunian Object." |
| NASA: Pluto: Includes a FAQ, fact sheet, and press releases relating to Pluto. |
| National Geographic News: Pluto Not a Planet, Astronomers Rule: Reports on reactions of several astronomers to the fact that Pluto is no longer a planet, according to the new definition chosen by the International Astronomical Union. |
| National Geographic News: Pluto: Planet or Comet?: 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. |
| Planetarium Removes Pluto From The A-List: Reports why Hayden Planetarium does not have Pluto shown as a planet. |
| Space.com: Astronomer Responds to Pluto-Not-a-Planet Claim: Astronomer Niel de Grasse Tyson, director of the Hayden Planetarium at the American Natural History Museum in New York, explains why Pluto should be regarded as king of the Kuiper Belt instead of as the smallest planet in our solar system. |
| Time for Kids: Pity Poor Pluto: Reports that the International Astronomical Union met, came up with a new definition for what a planet is, and decided that Pluto is not a planet |
| World Almanac for Kids: Pluto: Includes brief facts about the planet and a history of its discovery. |
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