The moon is rocky - astronauts even brought back some of the rocks to study.
It's rocky.
The moon is rocky. Its surface is covered with craters, mountains, and valleys made of various types of rock. Although the moon does not have a substantial atmosphere like Earth, it does have small traces of different gases.
It is rocky.
It is "rocky".
The "terrestrial planets" are rocky and the "gas giant planets" are gaseous.
Rocky
Saturn is classified as a gas giant, consisting primarily of hydrogen and helium with a small rocky core at its center.
The non-gaseous planets, called Rocky planets are Mercury, Venues, Earth and Mars.
Venus is not a gaseous planet. It is a rocky planet covered by cloud.
Uranus is a gas planet.
Rocky planets and gaseous planets.
Ceres is not a gaseous planet. Ceres is not a planet, it is a dwarf planet. Ceres has a rocky surface.