Question

The table below shows information about planets in our solar system. Pluto has a diameter of 2300 km. How does this information suggest to scientists that Pluto is not a planet?

Answer 1

Answer:

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.”