In the story I'm writing, a gas dwarf (named Eden) is discovered in a triple star system. Its atmosphere is mainly oxygen and water based, and its gravity is slightly higher than Earth's.
Unlike our gas giants, however, Eden has 2 "surfaces". The upper layer is made up of millions of floating islands hovering just above its cloud layer. (A moon or a passing planet probably broke as it passed Eden and was lock in its magnetic field). Known as the Aether, most of the planet's population lives up here. There are even cities built in the sky that simply hover from the planet's magnetic field.
Far below, however, is an unstable icy crust known as the shell, which is constantly changing due to the forces of the water and oxygen ocean layers below it. Shell quakes and rifts occur on a daily basis here, dramatically changing sections of the Shell in an instant.
Could such a world exist, and am I missing any important details?
