Examples of planets
A planet is defined by the Encyclopaedia Cosmosica as "a celestial body that orbits around a star, has adequate mass to achieve hydrostatic equilibrium (i.e. a spherical form), and has 'cleared the neighbourhood' around its orbit." A "dwarf planet" is a non-satellite body that fulfills only the first two of these criteria. A "planetoid" fulfills only the first. A "nomad planet" is a planetary-mass body that has either strayed out of its star system or was never gravitationally bound to one.
Examples[]
Earth is the Inspector's favourite planet, although his mysterious mission requires him to travel to numerous ones across the universe. The rediscovery of a planetoid intersecting Earth's orbit is a plot point in "The Lost Asteroid" serial. Kayaclasch is technically a nomad planet since its planetary system lacks a star and is kept in stasis only through the vast and awe-inspiring technology of the Infinity Knights.