It all depends on what the definition or meaning of 'planet' is.
Alex Trebek keeps saying there are now only 8 planets.
Who gets to decide? I think Pluto clearly is a planet.
It all depends on what the definition or meaning of 'planet' is.
Astronomers first called it a planet. And then, before it can complete a victory lap, they take the title away.
They should at least call it a brevet-planet!
And considering that Pluto's orbit varies so much from the ecliptic of the solar system, I wonder if its moons were acquired before or after being captured by the gravity of the sun.