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Question


Which organisation was responsible for excluding Pluto from the Sun's planet list?


Options:
A .   IAU
B .   IUPAC
C .   NASA
D .   USA
Answer: Option A
:
A

In 2006, the International Astronomical Union (IAU) adopted a new definition of a planet such that Pluto does not fit this definition. Hence, it is no longer a planet of the solar system.



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