Question

Why did scientists remove pluto away from the solar system?​

Answer 1

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

main reason for this name change comes from a redefinition of what a planet is.

Step-by-step explanation:

Dwarf planet 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.