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Question

Which organisation was responsible for excluding Pluto as a planet from the solar system?

A
IAU
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B
IUPAC
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C
NASA
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D
AU
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Solution

The correct option is A IAU
In 2006, the International Astronomical Union (IAU) adopted a new definition for planet. Pluto does not fit this definition. Therefore it is no longer a planet of the solar system.

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