Question

why pluto was excluded from the list of planets​

Answer 1

Explanation:

The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full-sized planet. Essentially Pluto meets all the criteria except one—it “has not cleared its neighboring region of other objects.”

Answer 2

Answer:

because in 2006 it was categorised as a dwarf planet because of its dwarfy size(i. e, it was comparitevely smaller than other planets