Solar System (Moons (Haumea (Haumea, named after the Hawaiian goddess of…
Haumea, named after the Hawaiian goddess of fertility, is about a third the mass of Pluto, and has just enough gravity to pull itself into an ellipsoid, or egg shape. Even though it's smaller, it's got moons of its own
Makemake, a much larger Kuiper belt object, has a diameter about two-thirds the size of Pluto. It was discovered in 2005 by Mike Brown and his team. So far, Makemake doesn't seem to have any moons.
If Pluto were in orbit around the Earth, I would consider it a satellite planet, as I do all spherical moons of planets.
Pluto is just as round as any another planet, and has moons like most other planets.
It's like saying Jupiter can have only 4 moons because no one can memorize 67.
When many of us grew up, there were nine planets in the Solar System. It was like a fixed point in our brains.
As kids, memorizing this list was an early right of passage of nerd pride: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.
I promise you this, though, we're never going back to nine planets… ever.
But then in 2005, Mike Brown discovered Eris, an icy object thought to be about the same size as Pluto, out beyond its orbit.
The Sun is the star at the center of the Solar System.
It is a nearly perfect sphere of hot plasma.
with internal convective motion that generates a magnetic field via a dynamo process.[
A planet has to orbit the Sun. Okay fine, Pluto does that.
For example, planet Earth accounts for a million times the rest of the material in its orbit, while Pluto is just a fraction of the icy objects in its realm.
A planet needs to have cleared out its orbit of other objects. Uh oh, Pluto hasn't done that
There are 8 planets in the solar system
There are other planets
Pluto Makemake Haumea