“The reason Pluto lost its planet status is not valid”
The study recommends classifying a planet based on whether it is large enough that its gravity allows it to become spherical in shape.
“And that’s not just an arbitrary definition. It turns out this is an important milestone in the evolution of a planetary body, because apparently when it happens, it initiates active geology in the body. Pluto, for instance, has an underground ocean, a multilayer atmosphere, organic compounds, evidence of ancient lakes and multiple moons. It’s more dynamic and alive than Mars. The only planet that has more complex geology is the Earth.”