They are called craters. They are caused by fast moving lumps of rock (meteors) crash into the side of a planet, and the impact creates a kind of pulse.
the inner planets are sometimes called Terrestrial Planets
Actually Dwarf planets are planets which are very small in size and cannot be called planets but not as small to be called asteroids, so the name dwarf planets.
The Outer Planets are called Jovian Planets!
Objects that are smaller than planets are called "dwarf planets"; even smaller objects are called "asteroids".
terrestial planets
They are sometimes called "major planets" to distinguish them from the "minor planets" (the asteroids) and "dwarf planets" like Pluto.
I can only asume you're referring to the craters.
the inner planets are sometimes called Terrestrial Planets
The Outer Planets are called Jovian Planets!
Actually Dwarf planets are planets which are very small in size and cannot be called planets but not as small to be called asteroids, so the name dwarf planets.
They are sometimes called minor planets (not mirror planets).They aren't planets really, but they are a bit like little planets orbiting the Sun.
Because planets orbit stars, they were called "planetai" (Greek) meaning wandering star.
Terrestrial planets.
Jovian planets.
Because they are in the asteroid belt. The planets that are outside of the asteroid belt are called the outer planets.
My car has lots of dents in it.
Objects that are smaller than planets are called "dwarf planets"; even smaller objects are called "asteroids".