shelly was surprised to learn the dwarf planet pluto used to be considered a planet. what would have had to…

shelly was surprised to learn the dwarf planet pluto used to be considered a planet. what would have had to be true for pluto to remain categorized as a planet?\no pluto would need to have an atmosphere.\no pluto would need to clear the neighborhood of its orbit.\no pluto would need to have a larger moon.\no pluto would need to have water or ice.

shelly was surprised to learn the dwarf planet pluto used to be considered a planet. what would have had to be true for pluto to remain categorized as a planet?\no pluto would need to have an atmosphere.\no pluto would need to clear the neighborhood of its orbit.\no pluto would need to have a larger moon.\no pluto would need to have water or ice.

Answer

Brief Explanations:

According to the International Astronomical Union's 2006 definition of a planet, one of the key criteria is that a planet must clear the neighborhood of its orbit. Pluto fails this criterion as it shares its orbital region with other objects in the Kuiper - belt. Having an atmosphere, a larger moon, or water/ice is not the determining factor for planetary status.

Answer:

Pluto would need to clear the neighborhood of its orbit.