# They are made of rock # They do not posses rings
All the inner planets are terrestrial planets.
They have no rings.
The inner planets are all terrestrial - they are "rocky". The outer planets are gas giants.
All for of the inner planets are similar in composition. They all have a clearly defined surface, unlike the gas giant planets.
They are all compact objects with rocky, accessible surfaces.
All the inner planets are terrestrial planets.
None of the inner planets have rings.
They have no rings.
The inner planets are all terrestrial - they are "rocky". The outer planets are gas giants.
All for of the inner planets are similar in composition. They all have a clearly defined surface, unlike the gas giant planets.
The inner planets Mercury, Venus, Earth, Mars are are all relatively small, they are all rocky, they all have a relatively thin atmosphere.
They are all compact objects with rocky, accessible surfaces.
These are the four outer gas giant planets; Jupiter, Saturn, Uranus and Neptune. They are all much larger than the inner planets, they all have a similar composition (gaseous atmospheres, mainly of Hydrogen and Helium) and they each have many moons and a ring system. None of the inner planets have a ring system and there are only three moons in total for the four inner planets (one for Earth and two in orbit around Mars).
That they all inner planets
All the inner planets are rocky or terrestrial planets.
they are all soild masses and mecury, venus, earth, mars
All the inner planets are like that