Rock Worlds

A Rock World (which includes Classic's "rockball", a catch-all term for typically small, rocky planets with little to no atmosphereClassic: Space p 105-106) covers Asteroid Belt, Tiny (Rock), Tiny (Sulfur), Small (Rock), Standard (Chthonian), and Large (Chthonian).GURPS Space "Basic Worldbuilding", p.75
== Other Types ==
=== Iceball ===
Some small planetoids lack a rocky or metallic core, and are called "iceballs".
== References ==
Category:Other Planets
Category:Space