it would be the average of all of all the planets .
If you mean all our planets and comets, it's called the Sun. It is called "The Solar System".
It is called the "ecliptic plane"
The belt of constellations through which all the planets move is called zodiac. The true shape of the planetary orbits was discovered by Kepler.
All planets turn on their axis. This is called the planet's rotation; one complete rotation is equal to one day on that planet.
it would be the average of all of all the planets .
Not all of the planets are held by gravity.
No that's what the four outer planets are called.
No. Planets form by a process called accretion, which is driven by gravity. Nobody creates planets.
If you mean all our planets and comets, it's called the Sun. It is called "The Solar System".
If you are talking about the planets that orbit our sun, that is called the solar system.
Mercury, Venus, Earth and Mars are the Rocky planets. They are called so simply because they are rocky, their outer layer is solid. All other planets in the solar system are gaseous.
No planets are called suns. The Sun is the starat the center of the Solar System
It is called the "ecliptic plane"
They are alike because they are both called planets, both terrestrial planets and gas giants are spheres, all have a somewhat dense core and lastly all orbit around the sun.
The inner planets are called "rocky" or terrestrial, a name which underscores the contrast with the outer gas giant planets.
The inner planets are all considered rocky planets in that under atmospheric layers, they have a rocky surface. The outer planets are made of gas and liquid, and are called gas giants. They have no solid surface. Also, all the outer planets have rings while the inner planets do not.