Inner Planets:
* Mercury, Venus, Earth, Mars
What is NOT true about inner planets:
* They have rings. This is characteristic of outer planets like Saturn, Jupiter, Uranus, and Neptune.
What IS true about inner planets:
* They are rocky. They are primarily composed of rock and heavy metals.
* They are smaller than the outer planets.
* They are closer to the Sun.
* They have fewer moons than outer planets. (Earth has one moon, Mars has two, Venus and Mercury have none).
* They are warmer than outer planets. (Though this is relative, as Venus is the hottest planet in our solar system).
Let me know if you have other questions about the inner planets!
