A small rocky core where solid debris has accumulated.
they are gas giants
Your question is illogical. Jupiter is a gas giant itself with rocky moons in orbit.There are no such things as gas giants of Jupiter.
* All bigger that Earth * All gas giants * All have more than one moon * All have rings
they are all made of gas.
All the gas giants have rings and no solid rocky cores.
Yes, all gass giants have their own moons
All of them are.
Density. The gas giants all retained a good bit of hydrogen.
gravity keeps the gas giants planets gases from escaping so they have thick atmosphere
Neptune, Jupiter, Saturn, and Uranus are all gas giants.
hydrogen
hydrogen