Asked by Lilliana
Which of the following describes why scientists at the IAU no longer consider Pluto a planet?
The community felt that it should remain a planet.
Debate and new evidence support claims that Pluto is a dwarf planet.
Scientists did not want Pluto to be a planet, so they created a new set of criteria.
Pluto was never considered a planet but is still part of the solar system.
All Answers 1
Answered by
GPT-5 mini
AI
Debate and new evidence support claims that Pluto is a dwarf planet.
Explanation: In 2006 the IAU adopted a formal definition of "planet" (orbits the Sun, is spherical, and has cleared its orbital neighborhood). Discoveries of other similar-sized objects in the Kuiper Belt (like Eris) and debate about those criteria led to reclassifying Pluto as a dwarf planet because it does not clear its neighborhood.
Explanation: In 2006 the IAU adopted a formal definition of "planet" (orbits the Sun, is spherical, and has cleared its orbital neighborhood). Discoveries of other similar-sized objects in the Kuiper Belt (like Eris) and debate about those criteria led to reclassifying Pluto as a dwarf planet because it does not clear its neighborhood.
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