We do - its called the moon.
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Only the four outer planets have rings. The four inner planets (Mercury, Venus, Earth and Mars) dont have rings.
They are similar because the inner planets dont have many moons.
the inner planets are hot and or warm. the outer planets have rings. they both have the asteriod belt in the middle. they both have4 planets. the inner planets are smaller, made of rock and are AWESOME!
Of all the Major planets only Mercury and Venus have no known natural satelites.
none of the inner planets
The inner planets are Mercury, Venus, Earth, and Mars. They are "inner" because the are the first 4 planets from the Sun.
The four inner, rocky planets are also known as the terrestrial planets. These are; Mercury, Venus, Earth and Mars. The four outer gas giant planets are Jupiter, Saturn, Uranus and Neptune. The inner planets are smaller and have a higher average density. The outer planets are much larger, but have no real surface - just atmosphere that gets thicker as you travel inwards. The outer planets all have a ring system (the inner planets dont) while the outer planets have captured a lot more natural satellites or moons than the inner planets.
Inner planets
After the inner planets you get the outer planets.
the inner planets are sometimes called Terrestrial Planets
Inner planets are terrestrial planets outer are jovian planets