Ice giant in mass. In 1952, science fiction writer James Blish coined the term "gas giant" and it was used to refer to the large non-terrestrial planets of the Solar System. However, in the 1990s, the compositions of Uranus and Neptune were discovered to be significantly different from those of Jupiter and Saturn. They are primarily composed of elements heavier than hydrogen and helium, constituting a separate type of giant planet altogether. Because during their formation Uranus and Neptune incorporated their material as either ices or gas trapped in water ice, the term "ice giant" came into use. Modelling the formation of
Planets and habitats of the Night's Dawn trilogy habitat to be germinated, after Eden. A floating habitat on Atlantis, captured by the possessed before being destroyed by Laton to stop them spreading to other habitats. A habitat orbiting Murora, in the Lalonde system. Habitat orbiting a gas giant of the Ross 154 system, the same primary as Felicity's. It was the first Edenist extra-Solar habitat. Orbits Saturn. One of the two Voidhawk bases. Orbits Saturn. One of the two Voidhawk bases. Planets and habitats of the Night's Dawn trilogy This article describes the major planets and space habitats of the Night's Dawn Trilogy. The only planet colonised by