jupiter, saturn, uranus
The inner planets are all rocky planets, whereas the outer planets are gas giants. Pluto is the exception. The outer planets also make 99% of our planets and are outside the asteroid belt.
solid; you can step on them.
A lander?
A face.
The four outer, or gas planets are Jupiter, Saturn, Uranus and Neptune. They are mainly made up of Hydrogen and Helium gas. They are also much larger than the Earth or the other three inner planets, so are referred to as gas giants.
The inner planets are also known as terrestrial planets. This term is used because they have solid rocky surfaces similar to Earth's.
Another name for the terrestrial planets is the inner planets. There are four terrestrial planets: Mercury, Venus, Earth and Mars.
Base.
Planets are only know as Gas Giants if they fall into that group, Saturn , Jupiter, Uranus and Neptune are Gaseous Planets . This is purely because the basic make up of the Planet is from Gases, they have no solid surface and are large.
The term "terra firma" is derived from Latin and means "solid earth." This name emphasizes the stability and solidity of the planet, distinguishing it from other celestial bodies like gas giants or rocky planets that may not have a solid surface on which to stand.
A face is a flat surface. The only solid with no flat surfaces is a sphere.
A vertex is the name of a corner on a solid where three or more faces meet (plural = vertices).