Light is provided by the planet's nucleus and there is a small rocky moon in orbit.

While it had taken the crystal globes some time to obliterate the four rocky moons, the total annihilation of the space platform required only seconds.

Now, from a distance, at the macro level, Europa's surface isn't as rugged as that of the rockier moons in the solar system.

They are a wide variety of rocky moons, icy moons, and some that are a combination of both.

What we used to call Oberon, the rocky moon, was now called Old Oberon.

Phoebe appears to be more akin to comets than to asteroids and typical rocky moons, the researchers said.

There were no large rocky moons, which was presumably why the initial dismantling operations had taken place elsewhere.

One was a metallic planet; the other two were rocky moons.

He shrugged, not at all impressed by rocky moons apparently.

If it has rocky moons, these could have liquid water.