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wonderopolis.org/wonder/why-is-pluto-no-longer-a-planet

Because it does not follow this rule, Pluto is no longer considered a planet. ... Dwarf planets, like Pluto, have not yet cleared the neighborhoods of their orbits ...

science.howstuffworks.com/pluto-planet.htm

On Aug. 24, 2006, the International Astronomical Union (IAU), an organization of professional astronomers, passed two resolutions that collectively revoked ...

www.bbc.com/news/science-environment-33462184

Jul 13, 2015 ... In 2006, Pluto was demoted from planet status. Why was it removed from the planet club?

www.universetoday.com/13573/why-pluto-is-no-longer-a-planet

Jan 5, 2012 ... Let's find out why Pluto is no longer considered a planet. Pluto was first discovered in 1930 by Clyde W. Tombaugh at the Lowell Observatory in ...

www.nasa.gov/audience/forstudents/k-4/stories/nasa-knows/what-is-pluto-k4.html

Pluto is not very big. It is only half as wide as the United States. Pluto is smaller than Earth's moon. This dwarf planet takes 248 Earth years to go around the sun.

solarsystem.nasa.gov/planets/pluto/basic

This group decided that Pluto was not really a planet because of its size and the strength of its gravitational field. So Pluto and objects like it are now called dwarf  ...

news.nationalgeographic.com/news/2006/08/060824-pluto-planet.html

Aug 24, 2006 ... Pluto is no longer a planet, according to a new official definition. Instead the icy sphere will be considered one of more than 40 "dwarf planets."

www.loc.gov/rr/scitech/mysteries/pluto.html

Essentially Pluto meets all the criteria except one- it “has not cleared its ... A “ dwarf planet,” as defined by the IAU, is a celestial body in direct orbit of the Sun that ... and considered the name for the god of the underworld appropriate for such a ...

scienceblogs.com/gregladen/2015/07/13/why-is-pluto-not-a-planet

Jul 13, 2015 ... The simplest reason that Pluto is not a planet is that planet experts ... the sun but that has not cleared its orbit is classified as a “dwarf planet.