Because it is the planetary system of Sol, another name for the Sun.
The sun
Retrograde Motion
The star Polaris may have its own planetary system. Certainly none in our solar system come close to it
It is nicknamed the "planetary Model" because it resembles the solar system.
A breathable atmosphere.
The galaxis are bigger than planetary nebulae, that are bigger than planetary systems.
A sun is a star that is the center of a planetary system.
The gears in a planetary gear system are the drive gear, ring gear, and planetary gear.
It makes up about 70% of all the planetary matter in the solar system.
planetary science
A system of celestial bodies grouped around a sun.
Because it is the planetary system of Sol, another name for the Sun.
ptolemaic
planetary
The sun
Retrograde Motion