That question doesn't affect the classification of planets in our Solar System, but will be relevant to some others" ("Pluto no longer a Planet," World Science Homepage, 2006).
Even some scientists who disliked the definition, however, felt that it was fair to demote Pluto. "According to the new definition, a full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity. In addition, a planet has to dominate the neighborhood around its orbit," and Pluto is not simply small, and Pluto also does not dominate its neighborhood but its moon Charon, is very large in proportion to the former planet, as is about half the size of Pluto, "while all the true planets are far larger than their moons" (Inman, 2006) "In addition, bodies that dominate their neighborhoods, sweep up asteroids, comets, and other debris, clearing a path along their orbits. By contrast, Pluto's orbit is somewhat "untidy" and it lacks this distinct characteristic (Inman, 2006). In short, its orbit and relationship with its 'moon' alone was enough to call its status into question.
Perhaps the real question...
Pluto nicknamed as “puzzling planet” or “runaway planet” was discovered by Clyde Tombaugh, a young US astronomer at the Arizona Lowell Observatory in 1930[footnoteRef:1]. Pluto is the largest known “dwarf planet” and the ninth largest object direct orbiting the sun. It’s the coldest, smallest and most distant planet from the sun. Similar to other Kuiper belt objects, the landscape of Pluto is mainly rock and ice. Astronomers have remained puzzled with
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