inner=terrestrial outer=non terrestrial
terrestrial planets
the inner planets are sometimes called Terrestrial Planets
It could be called interstellar space or terrestrial.
The four inner [terrestrial] planets: Mercury, Venus, Earth and Mars.
The four terrestrial planets in our solar system are Mercury, Venus, Earth, and Mars. They are called terrestrial planets because they have solid surfaces and are similar in composition to Earth.
The inner two terrestrial planets are Mercury and Venus.
They are called the terrestrial planets because they are similar to Earth (in fact one of them is Earth.
There is only one that we know of at the moment "Earth". However the 4 inner planets of our solar system - Mercury, Venus, Earth and Mars are all a little "Earth like" and these to are sometimes called "terrestrial planets" but more correctly they should be classified as "rocky" planets.
The inner planets closest to the sun are called rocky or terrestrial: Mercury, Venus, Earth, and Mars for a total of four.
Mercury, Venus, Earth, and Mars are known as terrestrial planets. They are primarily composed of silicate rocks or metals and have solid surfaces.
The terrestrial planets are Mercury, Venus, Earth, and Mars. They are called terrestrial because they are primarily composed of rocky materials and have solid surfaces.