National Geographic News: Pluto: Planet or Comet? -- [ Teens/Mature Teens ] - 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. (February 23, 2001) Visit

Curious About Astronomy: Is Pluto a Planet? -- [ Teens/Mature Teens ] - 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. (June, 2004) Visit

Space.com: Astronomer Responds to Pluto-Not-a-Planet Claim -- [ Teens/Mature Teens ] - 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. (February 2, 2001) Visit

National Geographic News: Pluto Not a Planet, Astronomers Rule -- [ Teens/Mature Teens ] - Reports on reactions of many astronomers to the fact that Pluto is no longer a planet, according to the new definition chosen by the International Astronomical Union. (August 24, 2006) Visit

NASA: Pluto -- [ Teens/Mature Teens ] - Includes a FAQ, fact sheet, and press releases relating to Pluto. Visit

World Almanac for Kids: Pluto -- [ Kids/Teens/Mature Teens ] - Includes brief facts about the planet & a history of its discovery. Visit

Time for Kids: Pity Poor Pluto -- [ Kids/Teens ] - Reports that the International Astronomical Union met, came up with a new definition for what a planet is, and decided that Pluto isn't a planet (August 24, 2006) Visit

CBBC: Experts Say Pluto Is Not a Planet -- [ Kids/Teens ] - Explains why Pluto is no longer considered a planet. (August 24, 2006) Visit

Astronomy for Kids: Pluto -- [ Kids/Teens ] - Includes details about its location & facts related to visibility, size, surface & its moons. Visit

KidsAstronomy.com: Pluto -- [ Kids/Teens ] - Provides details about its name & its origin in Greek mythology, facts related to gravity on the planet & its moon. Visit

Planetarium Removes Pluto From The A-List -- [ Teens/Mature Teens ] - Reports why Hayden Planetarium doesn't have Pluto shown as a planet. (January 22, 2001) Visit